Large-Scaled Telematics Analytics in Apache Spark with Wayne Zhang and Neil Parker
1 like795 views
The increasing availability of mobile phones with embedded GPS devices and sensors has spurred the use of vehicle telematics in recent years. Telematics provides detailed and continuous information of a vehicle such as the location, speed, and movement. Vehicle telematics can be further linked with other spatial data to provide context to understand driving behaviors. The collection of high-frequency telematics data results in huge volumes of data that must be processed efficiently. We present a solution that uses Apache Spark to load and transform large-scaled telematics data. We then present how to use machine learning on telematics data to derive insights about driving safety.
1 of 31
Downloaded 36 times
Ad
Recommended
Automobile Route Matching with Dynamic Time Warping Using PySpark with Cather...
Automobile Route Matching with Dynamic Time Warping Using PySpark with Cather...Databricks According to data compiled by the National Highway Traffic Safety Administration, in 2016, an average of ~100 people were killed in automobile accidents every day in the United States. Agero, a market leader in software-enabled driver assistance services, has responded to this growing problem with a breakthrough consumer app that provides near real-time driver behavior analysis and actionable insights to its users on how to become safer drivers.
As part of this effort, we have developed a methodology to identify the most frequent routes that each driver travels by applying Dynamic Time Warping time-series analysis techniques to spatial data. In this talk, we will give a high-level overview of the methodology, and discuss the performance improvement achieved by transitioning the software from stand-alone Python into PySpark + Databricks.
Discussion points will include how to determine the best way to (re)design Python functions to run in Spark, the development and use of user-defined functions in PySpark, how to integrate Spark data frames and functions into Python code, and how to use PySpark to perform ETL from AWS on very large datasets.
Hadoop Strata Talk - Uber, your hadoop has arrived 
Hadoop Strata Talk - Uber, your hadoop has arrived Vinoth Chandar The document discusses Uber's use of Hadoop to store and analyze large amounts of data. Some key points:
1) Uber was facing challenges with data reliability, system scalability, fragile data ingestion, and lack of multi-DC support with its previous data systems.
2) Uber implemented a Hadoop data lake to address these issues. The Hadoop ecosystem at Uber includes tools for data ingestion (Streamific, Komondor), storage (HDFS, Hive), processing (Spark, Presto) and serving data to applications and data marts.
3) Uber continues to work on challenges like enabling low-latency interactive SQL, implementing an all-active architecture for high availability, and reducing
Spark Meetup at Uber
Spark Meetup at UberDatabricks 1) Uber uses Spark and Hadoop to process large amounts of transportation data in real-time and batch. This includes building pipelines to ingest trip data from databases into a data warehouse within 1-2 hours.
2) Paricon is Uber's first Spark application which infers schemas from raw JSON data, converts it to Parquet format for faster querying, and validates the results. It processes over 15TB of data daily.
3) Future work includes building a SQL-based ETL platform on Spark, open sourcing SQL-on-Hadoop, and creating a machine learning platform with Spark and a real-time analytics system called Apollo using Spark Streaming.
Spark Summit EU talk by Sameer Agarwal
Spark Summit EU talk by Sameer AgarwalSpark Summit This document discusses Project Tungsten, which aims to substantially improve the memory and CPU efficiency of Spark. It describes how Spark has optimized IO but the CPU has become the bottleneck. Project Tungsten focuses on improving execution performance through techniques like explicit memory management, code generation, cache-aware algorithms, whole-stage code generation, and columnar in-memory data formats. It shows how these techniques provide significant performance improvements, such as 5-30x speedups on operators and 10-100x speedups on radix sort. Future work includes cost-based optimization and improving performance on many-core machines.
Producing Spark on YARN for ETL
Producing Spark on YARN for ETLDataWorks Summit/Hadoop Summit This document discusses Netflix's use of Spark on Yarn for ETL workloads. Some key points:
- Netflix runs Spark on Yarn across 3000 EC2 nodes to process large amounts of streaming data from over 100 million daily users.
- Technical challenges included optimizing performance for S3, dynamic resource allocation, and Parquet read/write. Improvements led to up to 18x faster job completion times.
- Production Spark applications include recommender systems that analyze user behavior and personalize content across billions of profiles and titles.
Temporal Operators For Spark Streaming And Its Application For Office365 Serv...
Temporal Operators For Spark Streaming And Its Application For Office365 Serv...Jen Aman This document discusses temporal operators for Spark Streaming and their application for Office365 service monitoring. It introduces temporal operators like reorder, event-time window aggregate, and join that allow normalizing and aggregating streaming data that may arrive out of order. These operators are used to calculate availability metrics over tumbling windows and generate alarms when availability drops between the current and previous windows. Examples show how temporal operators reorder, aggregate, and join streaming events based on timestamps to perform time-based analysis for monitoring Office365 services.
Improving SparkSQL Performance by 30%: How We Optimize Parquet Pushdown and P...
Improving SparkSQL Performance by 30%: How We Optimize Parquet Pushdown and P...Databricks The document discusses optimizations made to Spark SQL performance when working with Parquet files at ByteDance. It describes how Spark originally reads Parquet files and identifies two main areas for optimization: Parquet filter pushdown and the Parquet reader. For filter pushdown, sorting columns improved statistics and reduced data reads by 30%. For the reader, splitting it to first filter then read other columns prevented loading unnecessary data. These changes improved Spark SQL performance at ByteDance without changing jobs.
Spark Summit EU 2015: Lessons from 300+ production users
Spark Summit EU 2015: Lessons from 300+ production usersDatabricks At Databricks, we have a unique view into over a hundred different companies trying out Spark for development and production use-cases, from their support tickets and forum posts. Having seen so many different workflows and applications, some discernible patterns emerge when looking at common performance and scalability issues that our users run into. This talk will discuss some of these common common issues from an engineering and operations perspective, describing solutions and clarifying misconceptions.
Apache Spark Core—Deep Dive—Proper Optimization
Apache Spark Core—Deep Dive—Proper OptimizationDatabricks Optimizing spark jobs through a true understanding of spark core. Learn: What is a partition? What is the difference between read/shuffle/write partitions? How to increase parallelism and decrease output files? Where does shuffle data go between stages? What is the "right" size for your spark partitions and files? Why does a job slow down with only a few tasks left and never finish? Why doesn't adding nodes decrease my compute time?
Large-Scale Text Processing Pipeline with Spark ML and GraphFrames: Spark Sum...
Large-Scale Text Processing Pipeline with Spark ML and GraphFrames: Spark Sum...Spark Summit In this talk we evaluate Apache Spark for a data-intensive machine learning problem. Our use case focuses on policy diffusion detection across the state legislatures in the United States over time. Previous work on policy diffusion has been unable to make an all-pairs comparison between bills due to computational intensity. As a substitute, scholars have studied single topic areas.
We provide an implementation of this analysis workflow as a distributed text processing pipeline with Spark ML and GraphFrames.
Histogrammar package—a cross-platform suite of data aggregation primitives for making histograms, calculating descriptive statistics and plotting in Scala—is introduced to enable interactive data analysis in Spark REPL.
We discuss the challenges and strategies of unstructured data processing, data formats for storage and efficient access, and graph processing at scale.
Zeus: Uber’s Highly Scalable and Distributed Shuffle as a Service
Zeus: Uber’s Highly Scalable and Distributed Shuffle as a ServiceDatabricks Zeus is an efficient, highly scalable and distributed shuffle as a service which is powering all Data processing (Spark and Hive) at Uber. Uber runs one of the largest Spark and Hive clusters on top of YARN in industry which leads to many issues such as hardware failures (Burn out Disks), reliability and scalability challenges.
Spark Summit EU talk by Shay Nativ and Dvir Volk
Spark Summit EU talk by Shay Nativ and Dvir VolkSpark Summit This document discusses accelerating Spark ML models with Redis modules. It provides an overview of Redis and Spark, and describes how Redis modules can add new capabilities like secondary indexes, time series, and machine learning. The document demonstrates a Redis ML module that implements random forests and decision trees. It shows how Spark ML models can be trained, saved to Redis for low-latency serving, and evaluated directly in Redis for improved performance over Spark alone.
Building Robust, Adaptive Streaming Apps with Spark Streaming
Building Robust, Adaptive Streaming Apps with Spark StreamingDatabricks As the adoption of Spark Streaming increases rapidly, the community has been asking for greater robustness and scalability from Spark Streaming applications in a wider range of operating environments. To fulfill these demands, we have steadily added a number of features in Spark Streaming. We have added backpressure mechanisms which allows Spark Streaming to dynamically adapt to changes in incoming data rates, and maintain stability of the application. In addition, we are extending Spark’s Dynamic Allocation to Spark Streaming, so that streaming applications can elastically scale based on processing requirements. In my talk, I am going to explore these mechanisms and explain how developers can write robust, scalable and adaptive streaming applications using them. Presented by Tathagata "TD" Das from Databricks.
Use r tutorial part1, introduction to sparkr
Use r tutorial part1, introduction to sparkrDatabricks This document introduces SparkR, which allows users to perform big data processing from R. It discusses how SparkR enables data exploration using DataFrames for ETL and data cleaning. SparkR also supports advanced analytics like machine learning by integrating R with Spark MLlib. The tutorial outlines exploring data, advanced analytics, and using SparkR DataFrames for tasks like aggregation, filtering, visualization with ggplot, and large-scale machine learning. It recommends signing up for an online Databricks notebook to run SparkR examples and tutorials interactively on a dedicated Spark cluster.
The Parquet Format and Performance Optimization Opportunities
The Parquet Format and Performance Optimization OpportunitiesDatabricks The Parquet format is one of the most widely used columnar storage formats in the Spark ecosystem. Given that I/O is expensive and that the storage layer is the entry point for any query execution, understanding the intricacies of your storage format is important for optimizing your workloads.
As an introduction, we will provide context around the format, covering the basics of structured data formats and the underlying physical data storage model alternatives (row-wise, columnar and hybrid). Given this context, we will dive deeper into specifics of the Parquet format: representation on disk, physical data organization (row-groups, column-chunks and pages) and encoding schemes. Now equipped with sufficient background knowledge, we will discuss several performance optimization opportunities with respect to the format: dictionary encoding, page compression, predicate pushdown (min/max skipping), dictionary filtering and partitioning schemes. We will learn how to combat the evil that is ‘many small files’, and will discuss the open-source Delta Lake format in relation to this and Parquet in general.
This talk serves both as an approachable refresher on columnar storage as well as a guide on how to leverage the Parquet format for speeding up analytical workloads in Spark using tangible tips and tricks.
Spark Summit EU talk by Ram Sriharsha and Vlad Feinberg
Spark Summit EU talk by Ram Sriharsha and Vlad FeinbergSpark Summit This document summarizes an online machine learning framework called Structured Streaming that is being developed for Apache Spark. Some key points:
- It allows machine learning algorithms to be applied continuously to streaming data and update models incrementally in an online fashion.
- Models are updated every time interval (e.g. every second) based on new data within that interval. This provides an approximation of processing all data to date.
- It uses a stateful aggregation approach to allow models to be updated and merged across distributed partitions in a way that is deterministic but not necessarily commutative.
- APIs are provided for common online learning algorithms like online logistic regression and gradient descent to interface with streaming data sources and sinks.
Spark Under the Hood - Meetup @ Data Science London
Spark Under the Hood - Meetup @ Data Science LondonDatabricks The document summarizes a meetup on Apache Spark hosted by Data Science London. It introduces the speakers - Sameer Farooqui, Doug Bateman, and Jon Bates - and their backgrounds in data science and Spark training. The agenda includes talks on a power plant predictive modeling demo using Spark and different approaches to parallelizing machine learning algorithms in Spark like model, divide and conquer, and data parallelism. It also provides overviews of Spark's machine learning library MLlib and common algorithms. The goal is for attendees to learn about Spark's unified engine and how to apply different machine learning techniques at scale.
ETL to ML: Use Apache Spark as an end to end tool for Advanced Analytics
ETL to ML: Use Apache Spark as an end to end tool for Advanced AnalyticsMiklos Christine Spark Meetup slides to discuss ETL, SQL, and Machine Learning strategies using Apache Spark as the processing engine.
Scaling Apache Spark MLlib to Billions of Parameters: Spark Summit East talk ...
Scaling Apache Spark MLlib to Billions of Parameters: Spark Summit East talk ...Spark Summit Apache Spark MLlib provides scalable implementation of popular machine learning algorithms, which lets users train models from big dataset and iterate fast. The existing implementations assume that the number of parameters is small enough to fit in the memory of a single machine. However, many applications require solving problems with billions of parameters on a huge amount of data such as Ads CTR prediction and deep neural network. This requirement far exceeds the capacity of exisiting MLlib algorithms many of who use L-BFGS as the underlying solver. In order to fill this gap, we developed Vector-free L-BFGS for MLlib. It can solve optimization problems with billions of parameters in the Spark SQL framework where the training data are often generated. The algorithm scales very well and enables a variety of MLlib algorithms to handle a massive number of parameters over large datasets. In this talk, we will illustrate the power of Vector-free L-BFGS via logistic regression with real-world dataset and requirement. We will also discuss how this approach could be applied to other ML algorithms.
TuneIn: How to Get Your Hadoop/Spark Jobs Tuned While You’re Sleeping with Ma...
TuneIn: How to Get Your Hadoop/Spark Jobs Tuned While You’re Sleeping with Ma...Databricks Have you ever tuned a Spark, Hive or Pig job? If yes, then you must know that it is a never ending cycle of executing the job, observing the running job, making sense out of hundreds of metrics and then re-running it with the better parameters. Imagine doing this for tens of thousands of jobs. Performance optimization at this scale manually is tedious, requires significant expertise and results into wasting a lot of resources to do the same task again and again.
As Hadoop/Spark is the natural choice for any data processing with many naive users, it becomes important to develop a tool to automatically tune Hadoop/Spark jobs. At LinkedIn we tried to solve the problem using Dr. Elephant, an open-sourced self-serve performance monitoring and tuning tool for Hadoop and Spark, used at LinkedIn and various other companies. While it has proven to be very successful, it relies on the developers’ initiative to check and apply the recommendation manually. It also expects some expertise from developers to arrive at the optimal configuration from the recommendations.
In this talk we will discuss TuneIn, an auto tuning framework developed on top of Dr. Elephant. We will describe how we are using an iterative approach of optimization to find optimal parameters. We will discuss the various optimization algorithms we tried and why we found Particle Swarm Optimization algorithm to give best results. We will talk about how we avoided using any extra execution and tuned the jobs during their regular scheduled execution. We go into detail on techniques employed to ensure faster convergence and zero failed executions while tuning. We will showcase how we achieved more than 50% gain in resource usage by tuning a small set of parameters. We will also talk about the lessons learned and the future roadmap.
Koalas: Making an Easy Transition from Pandas to Apache Spark
Koalas: Making an Easy Transition from Pandas to Apache SparkDatabricks Koalas is an open-source project that aims at bridging the gap between big data and small data for data scientists and at simplifying Apache Spark for people who are already familiar with pandas library in Python. Pandas is the standard tool for data science and it is typically the first step to explore and manipulate a data set, but pandas does not scale well to big data.
Jump Start into Apache® Spark™ and Databricks
Jump Start into Apache® Spark™ and DatabricksDatabricks These are the slides from the Jump Start into Apache Spark and Databricks webinar on February 10th, 2016.
---
Spark is a fast, easy to use, and unified engine that allows you to solve many Data Sciences and Big Data (and many not-so-Big Data) scenarios easily. Spark comes packaged with higher-level libraries, including support for SQL queries, streaming data, machine learning, and graph processing. We will leverage Databricks to quickly and easily demonstrate, visualize, and debug our code samples; the notebooks will be available for you to download.
Sqoop on Spark for Data Ingestion
Sqoop on Spark for Data IngestionDataWorks Summit Sqoop on Spark provides a way to run Sqoop jobs using Apache Spark for parallel data ingestion. It allows Sqoop jobs to leverage Spark's speed and growing community. The key aspects covered are:
- Sqoop jobs can be created and executed on Spark by initializing a Spark context and wrapping Sqoop and Spark initialization.
- Data is partitioned and extracted in parallel using Spark RDDs and map transformations calling Sqoop connector APIs.
- Loading also uses Spark RDDs and map transformations to parallelly load data calling connector load APIs.
- Microbenchmarks show Spark-based ingestion can be significantly faster than traditional MapReduce-based Sqoop for large datasets
Apache® Spark™ 1.6 presented by Databricks co-founder Patrick Wendell
Apache® Spark™ 1.6 presented by Databricks co-founder Patrick WendellDatabricks In this webcast, Patrick Wendell from Databricks will be speaking about Apache Spark's new 1.6 release.
Spark 1.6 will include (but not limited to) a type-safe API called Dataset on top of DataFrames that leverages all the work in Project Tungsten to have more robust and efficient execution (including memory management, code generation, and query optimization) [SPARK-9999], adaptive query execution [SPARK-9850], and unified memory management by consolidating cache and execution memory [SPARK-10000].
Apache Spark for Machine Learning with High Dimensional Labels: Spark Summit ...
Apache Spark for Machine Learning with High Dimensional Labels: Spark Summit ...Spark Summit This talk will cover the tools we used, the hurdles we faced and the work arounds we developed with the help from Databricks support in our attempt to build a custom machine learning model and use it to predict the TV ratings for different networks and demographics.
The Apache Spark machine learning and dataframe APIs make it incredibly easy to produce a machine learning pipeline to solve an archetypal supervised learning problem. In our applications at Cadent, we face a challenge with high dimensional labels and relatively low dimensional features; at first pass such a problem is all but intractable but thanks to a large number of historical records and the tools available in Apache Spark, we were able to construct a multi-stage model capable of forecasting with sufficient accuracy to drive the business application.
Over the course of our work we have come across many tools that made our lives easier, and others that forced work around. In this talk we will review our custom multi-stage methodology, review the challenges we faced and walk through the key steps that made our project successful.
Jump Start on Apache® Spark™ 2.x with Databricks 
Jump Start on Apache® Spark™ 2.x with Databricks Databricks Apache Spark 2.0 and subsequent releases of Spark 2.1 and 2.2 have laid the foundation for many new features and functionality. Its main three themes—easier, faster, and smarter—are pervasive in its unified and simplified high-level APIs for Structured data.
In this introductory part lecture and part hands-on workshop, you’ll learn how to apply some of these new APIs using Databricks Community Edition. In particular, we will cover the following areas:
Agenda:
• Overview of Spark Fundamentals & Architecture
• What’s new in Spark 2.x
• Unified APIs: SparkSessions, SQL, DataFrames, Datasets
• Introduction to DataFrames, Datasets and Spark SQL
• Introduction to Structured Streaming Concepts
• Four Hands On Labs
You will use Databricks Community Edition, which will give you unlimited free access to a ~6 GB Spark 2.x local mode cluster. And in the process, you will learn how to create a cluster, navigate in Databricks, explore a couple of datasets, perform transformations and ETL, save your data as tables and parquet files, read from these sources, and analyze datasets using DataFrames/Datasets API and Spark SQL.
Level: Beginner to intermediate, not for advanced Spark users.
Prerequisite: You will need a laptop with Chrome or Firefox browser installed with at least 8 GB. Introductory or basic knowledge Scala or Python is required, since the Notebooks will be in Scala; Python is optional.
Bio:
Jules S. Damji is an Apache Spark Community Evangelist with Databricks. He is a hands-on developer with over 15 years of experience and has worked at leading companies, such as Sun Microsystems, Netscape, LoudCloud/Opsware, VeriSign, Scalix, and ProQuest, building large-scale distributed systems. Before joining Databricks, he was a Developer Advocate at Hortonworks.
Spark Summit EU 2015: Combining the Strengths of MLlib, scikit-learn, and R
Spark Summit EU 2015: Combining the Strengths of MLlib, scikit-learn, and RDatabricks This talk discusses integrating common data science tools like Python pandas, scikit-learn, and R with MLlib, Spark’s distributed Machine Learning (ML) library. Integration is simple; migration to distributed ML can be done lazily; and scaling to big data can significantly improve accuracy. We demonstrate integration with a simple data science workflow. Data scientists often encounter scaling bottlenecks with single-machine ML tools. Yet the overhead in migrating to a distributed workflow can seem daunting. In this talk, we demonstrate such a migration, taking advantage of Spark and MLlib’s integration with common ML libraries. We begin with a small dataset which runs on a single machine. Increasing the size, we hit bottlenecks in various parts of the workflow: hyperparameter tuning, then ETL, and eventually the core learning algorithm. As we hit each bottleneck, we parallelize that part of the workflow using Spark and MLlib. As we increase the dataset and model size, we can see significant gains in accuracy. We end with results demonstrating the impressive scalability of MLlib algorithms. With accuracy comparable to traditional ML libraries, combined with state-of-the-art distributed scalability, MLlib is a valuable new tool for the modern data scientist.
Operational Tips For Deploying Apache Spark
Operational Tips For Deploying Apache SparkDatabricks Operational Tips for Deploying Apache Spark provides an overview of Apache Spark configuration, pipeline design best practices, and debugging techniques. It discusses how to configure Spark through command line options, programmatically, and Hadoop configs. It also covers topics like file formats, compression codecs, partitioning, and monitoring Spark jobs. The document provides tips on common issues like OutOfMemoryErrors, debugging SQL queries, and tuning shuffle partitions.
Large-scaled telematics analytics
Large-scaled telematics analyticsDataWorks Summit The increasing availability of mobile phones with embedded GPS devices and sensors has spurred the use of vehicle telematics in recent years. Telematics provides detailed and continuous information of a vehicle such as the location, speed, and movement. Vehicle telematics can be further linked with other spatial data to provide context to understand driving behaviors at the detailed level. However, the collection of high-frequency telematics data results in huge volumes of data that must be processed efficiently. And the raw sensor and GPS data must be properly pre-processed and transformed to extract signal relevant to downstream processes. In addition, driving behavior often depends on the spatial context, and the analysis of telematics must be contextualized using spatial and real-time traffic data.
Our talk covers the promises and challenges of telematics data. We present a framework for large-scaled telematics data analysis using Apache big data tools (Hadoop, Hive, Spark, Kafka, etc). We discuss common techniques to load and transform telematics data. We then present how to use machine learning on telematics data to derive insights about driving safety.
Speakers
Yanwei Zhang, Senior Data Scientists II, Uber
Neil Parker, Senior Software Engineer, Uber
Strata Stinger Talk October 2013
Strata Stinger Talk October 2013alanfgates Slides from the talk Apache Hive and Stinger, Petabyte scale SQL in Hadoop presented by Arun Murthy, Alan Gates, and Owen O'Malley
Ad
More Related Content
What's hot (20)
Apache Spark Core—Deep Dive—Proper Optimization
Apache Spark Core—Deep Dive—Proper OptimizationDatabricks Optimizing spark jobs through a true understanding of spark core. Learn: What is a partition? What is the difference between read/shuffle/write partitions? How to increase parallelism and decrease output files? Where does shuffle data go between stages? What is the "right" size for your spark partitions and files? Why does a job slow down with only a few tasks left and never finish? Why doesn't adding nodes decrease my compute time?
Large-Scale Text Processing Pipeline with Spark ML and GraphFrames: Spark Sum...
Large-Scale Text Processing Pipeline with Spark ML and GraphFrames: Spark Sum...Spark Summit In this talk we evaluate Apache Spark for a data-intensive machine learning problem. Our use case focuses on policy diffusion detection across the state legislatures in the United States over time. Previous work on policy diffusion has been unable to make an all-pairs comparison between bills due to computational intensity. As a substitute, scholars have studied single topic areas.
We provide an implementation of this analysis workflow as a distributed text processing pipeline with Spark ML and GraphFrames.
Histogrammar package—a cross-platform suite of data aggregation primitives for making histograms, calculating descriptive statistics and plotting in Scala—is introduced to enable interactive data analysis in Spark REPL.
We discuss the challenges and strategies of unstructured data processing, data formats for storage and efficient access, and graph processing at scale.
Zeus: Uber’s Highly Scalable and Distributed Shuffle as a Service
Zeus: Uber’s Highly Scalable and Distributed Shuffle as a ServiceDatabricks Zeus is an efficient, highly scalable and distributed shuffle as a service which is powering all Data processing (Spark and Hive) at Uber. Uber runs one of the largest Spark and Hive clusters on top of YARN in industry which leads to many issues such as hardware failures (Burn out Disks), reliability and scalability challenges.
Spark Summit EU talk by Shay Nativ and Dvir Volk
Spark Summit EU talk by Shay Nativ and Dvir VolkSpark Summit This document discusses accelerating Spark ML models with Redis modules. It provides an overview of Redis and Spark, and describes how Redis modules can add new capabilities like secondary indexes, time series, and machine learning. The document demonstrates a Redis ML module that implements random forests and decision trees. It shows how Spark ML models can be trained, saved to Redis for low-latency serving, and evaluated directly in Redis for improved performance over Spark alone.
Building Robust, Adaptive Streaming Apps with Spark Streaming
Building Robust, Adaptive Streaming Apps with Spark StreamingDatabricks As the adoption of Spark Streaming increases rapidly, the community has been asking for greater robustness and scalability from Spark Streaming applications in a wider range of operating environments. To fulfill these demands, we have steadily added a number of features in Spark Streaming. We have added backpressure mechanisms which allows Spark Streaming to dynamically adapt to changes in incoming data rates, and maintain stability of the application. In addition, we are extending Spark’s Dynamic Allocation to Spark Streaming, so that streaming applications can elastically scale based on processing requirements. In my talk, I am going to explore these mechanisms and explain how developers can write robust, scalable and adaptive streaming applications using them. Presented by Tathagata "TD" Das from Databricks.
Use r tutorial part1, introduction to sparkr
Use r tutorial part1, introduction to sparkrDatabricks This document introduces SparkR, which allows users to perform big data processing from R. It discusses how SparkR enables data exploration using DataFrames for ETL and data cleaning. SparkR also supports advanced analytics like machine learning by integrating R with Spark MLlib. The tutorial outlines exploring data, advanced analytics, and using SparkR DataFrames for tasks like aggregation, filtering, visualization with ggplot, and large-scale machine learning. It recommends signing up for an online Databricks notebook to run SparkR examples and tutorials interactively on a dedicated Spark cluster.
The Parquet Format and Performance Optimization Opportunities
The Parquet Format and Performance Optimization OpportunitiesDatabricks The Parquet format is one of the most widely used columnar storage formats in the Spark ecosystem. Given that I/O is expensive and that the storage layer is the entry point for any query execution, understanding the intricacies of your storage format is important for optimizing your workloads.
As an introduction, we will provide context around the format, covering the basics of structured data formats and the underlying physical data storage model alternatives (row-wise, columnar and hybrid). Given this context, we will dive deeper into specifics of the Parquet format: representation on disk, physical data organization (row-groups, column-chunks and pages) and encoding schemes. Now equipped with sufficient background knowledge, we will discuss several performance optimization opportunities with respect to the format: dictionary encoding, page compression, predicate pushdown (min/max skipping), dictionary filtering and partitioning schemes. We will learn how to combat the evil that is ‘many small files’, and will discuss the open-source Delta Lake format in relation to this and Parquet in general.
This talk serves both as an approachable refresher on columnar storage as well as a guide on how to leverage the Parquet format for speeding up analytical workloads in Spark using tangible tips and tricks.
Spark Summit EU talk by Ram Sriharsha and Vlad Feinberg
Spark Summit EU talk by Ram Sriharsha and Vlad FeinbergSpark Summit This document summarizes an online machine learning framework called Structured Streaming that is being developed for Apache Spark. Some key points:
- It allows machine learning algorithms to be applied continuously to streaming data and update models incrementally in an online fashion.
- Models are updated every time interval (e.g. every second) based on new data within that interval. This provides an approximation of processing all data to date.
- It uses a stateful aggregation approach to allow models to be updated and merged across distributed partitions in a way that is deterministic but not necessarily commutative.
- APIs are provided for common online learning algorithms like online logistic regression and gradient descent to interface with streaming data sources and sinks.
Spark Under the Hood - Meetup @ Data Science London
Spark Under the Hood - Meetup @ Data Science LondonDatabricks The document summarizes a meetup on Apache Spark hosted by Data Science London. It introduces the speakers - Sameer Farooqui, Doug Bateman, and Jon Bates - and their backgrounds in data science and Spark training. The agenda includes talks on a power plant predictive modeling demo using Spark and different approaches to parallelizing machine learning algorithms in Spark like model, divide and conquer, and data parallelism. It also provides overviews of Spark's machine learning library MLlib and common algorithms. The goal is for attendees to learn about Spark's unified engine and how to apply different machine learning techniques at scale.
ETL to ML: Use Apache Spark as an end to end tool for Advanced Analytics
ETL to ML: Use Apache Spark as an end to end tool for Advanced AnalyticsMiklos Christine Spark Meetup slides to discuss ETL, SQL, and Machine Learning strategies using Apache Spark as the processing engine.
Scaling Apache Spark MLlib to Billions of Parameters: Spark Summit East talk ...
Scaling Apache Spark MLlib to Billions of Parameters: Spark Summit East talk ...Spark Summit Apache Spark MLlib provides scalable implementation of popular machine learning algorithms, which lets users train models from big dataset and iterate fast. The existing implementations assume that the number of parameters is small enough to fit in the memory of a single machine. However, many applications require solving problems with billions of parameters on a huge amount of data such as Ads CTR prediction and deep neural network. This requirement far exceeds the capacity of exisiting MLlib algorithms many of who use L-BFGS as the underlying solver. In order to fill this gap, we developed Vector-free L-BFGS for MLlib. It can solve optimization problems with billions of parameters in the Spark SQL framework where the training data are often generated. The algorithm scales very well and enables a variety of MLlib algorithms to handle a massive number of parameters over large datasets. In this talk, we will illustrate the power of Vector-free L-BFGS via logistic regression with real-world dataset and requirement. We will also discuss how this approach could be applied to other ML algorithms.
TuneIn: How to Get Your Hadoop/Spark Jobs Tuned While You’re Sleeping with Ma...
TuneIn: How to Get Your Hadoop/Spark Jobs Tuned While You’re Sleeping with Ma...Databricks Have you ever tuned a Spark, Hive or Pig job? If yes, then you must know that it is a never ending cycle of executing the job, observing the running job, making sense out of hundreds of metrics and then re-running it with the better parameters. Imagine doing this for tens of thousands of jobs. Performance optimization at this scale manually is tedious, requires significant expertise and results into wasting a lot of resources to do the same task again and again.
As Hadoop/Spark is the natural choice for any data processing with many naive users, it becomes important to develop a tool to automatically tune Hadoop/Spark jobs. At LinkedIn we tried to solve the problem using Dr. Elephant, an open-sourced self-serve performance monitoring and tuning tool for Hadoop and Spark, used at LinkedIn and various other companies. While it has proven to be very successful, it relies on the developers’ initiative to check and apply the recommendation manually. It also expects some expertise from developers to arrive at the optimal configuration from the recommendations.
In this talk we will discuss TuneIn, an auto tuning framework developed on top of Dr. Elephant. We will describe how we are using an iterative approach of optimization to find optimal parameters. We will discuss the various optimization algorithms we tried and why we found Particle Swarm Optimization algorithm to give best results. We will talk about how we avoided using any extra execution and tuned the jobs during their regular scheduled execution. We go into detail on techniques employed to ensure faster convergence and zero failed executions while tuning. We will showcase how we achieved more than 50% gain in resource usage by tuning a small set of parameters. We will also talk about the lessons learned and the future roadmap.
Koalas: Making an Easy Transition from Pandas to Apache Spark
Koalas: Making an Easy Transition from Pandas to Apache SparkDatabricks Koalas is an open-source project that aims at bridging the gap between big data and small data for data scientists and at simplifying Apache Spark for people who are already familiar with pandas library in Python. Pandas is the standard tool for data science and it is typically the first step to explore and manipulate a data set, but pandas does not scale well to big data.
Jump Start into Apache® Spark™ and Databricks
Jump Start into Apache® Spark™ and DatabricksDatabricks These are the slides from the Jump Start into Apache Spark and Databricks webinar on February 10th, 2016.
---
Spark is a fast, easy to use, and unified engine that allows you to solve many Data Sciences and Big Data (and many not-so-Big Data) scenarios easily. Spark comes packaged with higher-level libraries, including support for SQL queries, streaming data, machine learning, and graph processing. We will leverage Databricks to quickly and easily demonstrate, visualize, and debug our code samples; the notebooks will be available for you to download.
Sqoop on Spark for Data Ingestion
Sqoop on Spark for Data IngestionDataWorks Summit Sqoop on Spark provides a way to run Sqoop jobs using Apache Spark for parallel data ingestion. It allows Sqoop jobs to leverage Spark's speed and growing community. The key aspects covered are:
- Sqoop jobs can be created and executed on Spark by initializing a Spark context and wrapping Sqoop and Spark initialization.
- Data is partitioned and extracted in parallel using Spark RDDs and map transformations calling Sqoop connector APIs.
- Loading also uses Spark RDDs and map transformations to parallelly load data calling connector load APIs.
- Microbenchmarks show Spark-based ingestion can be significantly faster than traditional MapReduce-based Sqoop for large datasets
Apache® Spark™ 1.6 presented by Databricks co-founder Patrick Wendell
Apache® Spark™ 1.6 presented by Databricks co-founder Patrick WendellDatabricks In this webcast, Patrick Wendell from Databricks will be speaking about Apache Spark's new 1.6 release.
Spark 1.6 will include (but not limited to) a type-safe API called Dataset on top of DataFrames that leverages all the work in Project Tungsten to have more robust and efficient execution (including memory management, code generation, and query optimization) [SPARK-9999], adaptive query execution [SPARK-9850], and unified memory management by consolidating cache and execution memory [SPARK-10000].
Apache Spark for Machine Learning with High Dimensional Labels: Spark Summit ...
Apache Spark for Machine Learning with High Dimensional Labels: Spark Summit ...Spark Summit This talk will cover the tools we used, the hurdles we faced and the work arounds we developed with the help from Databricks support in our attempt to build a custom machine learning model and use it to predict the TV ratings for different networks and demographics.
The Apache Spark machine learning and dataframe APIs make it incredibly easy to produce a machine learning pipeline to solve an archetypal supervised learning problem. In our applications at Cadent, we face a challenge with high dimensional labels and relatively low dimensional features; at first pass such a problem is all but intractable but thanks to a large number of historical records and the tools available in Apache Spark, we were able to construct a multi-stage model capable of forecasting with sufficient accuracy to drive the business application.
Over the course of our work we have come across many tools that made our lives easier, and others that forced work around. In this talk we will review our custom multi-stage methodology, review the challenges we faced and walk through the key steps that made our project successful.
Jump Start on Apache® Spark™ 2.x with Databricks
Jump Start on Apache® Spark™ 2.x with Databricks Databricks Apache Spark 2.0 and subsequent releases of Spark 2.1 and 2.2 have laid the foundation for many new features and functionality. Its main three themes—easier, faster, and smarter—are pervasive in its unified and simplified high-level APIs for Structured data.
In this introductory part lecture and part hands-on workshop, you’ll learn how to apply some of these new APIs using Databricks Community Edition. In particular, we will cover the following areas:
Agenda:
• Overview of Spark Fundamentals & Architecture
• What’s new in Spark 2.x
• Unified APIs: SparkSessions, SQL, DataFrames, Datasets
• Introduction to DataFrames, Datasets and Spark SQL
• Introduction to Structured Streaming Concepts
• Four Hands On Labs
You will use Databricks Community Edition, which will give you unlimited free access to a ~6 GB Spark 2.x local mode cluster. And in the process, you will learn how to create a cluster, navigate in Databricks, explore a couple of datasets, perform transformations and ETL, save your data as tables and parquet files, read from these sources, and analyze datasets using DataFrames/Datasets API and Spark SQL.
Level: Beginner to intermediate, not for advanced Spark users.
Prerequisite: You will need a laptop with Chrome or Firefox browser installed with at least 8 GB. Introductory or basic knowledge Scala or Python is required, since the Notebooks will be in Scala; Python is optional.
Bio:
Jules S. Damji is an Apache Spark Community Evangelist with Databricks. He is a hands-on developer with over 15 years of experience and has worked at leading companies, such as Sun Microsystems, Netscape, LoudCloud/Opsware, VeriSign, Scalix, and ProQuest, building large-scale distributed systems. Before joining Databricks, he was a Developer Advocate at Hortonworks.
Spark Summit EU 2015: Combining the Strengths of MLlib, scikit-learn, and R
Spark Summit EU 2015: Combining the Strengths of MLlib, scikit-learn, and RDatabricks This talk discusses integrating common data science tools like Python pandas, scikit-learn, and R with MLlib, Spark’s distributed Machine Learning (ML) library. Integration is simple; migration to distributed ML can be done lazily; and scaling to big data can significantly improve accuracy. We demonstrate integration with a simple data science workflow. Data scientists often encounter scaling bottlenecks with single-machine ML tools. Yet the overhead in migrating to a distributed workflow can seem daunting. In this talk, we demonstrate such a migration, taking advantage of Spark and MLlib’s integration with common ML libraries. We begin with a small dataset which runs on a single machine. Increasing the size, we hit bottlenecks in various parts of the workflow: hyperparameter tuning, then ETL, and eventually the core learning algorithm. As we hit each bottleneck, we parallelize that part of the workflow using Spark and MLlib. As we increase the dataset and model size, we can see significant gains in accuracy. We end with results demonstrating the impressive scalability of MLlib algorithms. With accuracy comparable to traditional ML libraries, combined with state-of-the-art distributed scalability, MLlib is a valuable new tool for the modern data scientist.
Operational Tips For Deploying Apache Spark
Operational Tips For Deploying Apache SparkDatabricks Operational Tips for Deploying Apache Spark provides an overview of Apache Spark configuration, pipeline design best practices, and debugging techniques. It discusses how to configure Spark through command line options, programmatically, and Hadoop configs. It also covers topics like file formats, compression codecs, partitioning, and monitoring Spark jobs. The document provides tips on common issues like OutOfMemoryErrors, debugging SQL queries, and tuning shuffle partitions.
Similar to Large-Scaled Telematics Analytics in Apache Spark with Wayne Zhang and Neil Parker (20)
Large-scaled telematics analytics
Large-scaled telematics analyticsDataWorks Summit The increasing availability of mobile phones with embedded GPS devices and sensors has spurred the use of vehicle telematics in recent years. Telematics provides detailed and continuous information of a vehicle such as the location, speed, and movement. Vehicle telematics can be further linked with other spatial data to provide context to understand driving behaviors at the detailed level. However, the collection of high-frequency telematics data results in huge volumes of data that must be processed efficiently. And the raw sensor and GPS data must be properly pre-processed and transformed to extract signal relevant to downstream processes. In addition, driving behavior often depends on the spatial context, and the analysis of telematics must be contextualized using spatial and real-time traffic data.
Our talk covers the promises and challenges of telematics data. We present a framework for large-scaled telematics data analysis using Apache big data tools (Hadoop, Hive, Spark, Kafka, etc). We discuss common techniques to load and transform telematics data. We then present how to use machine learning on telematics data to derive insights about driving safety.
Speakers
Yanwei Zhang, Senior Data Scientists II, Uber
Neil Parker, Senior Software Engineer, Uber
Strata Stinger Talk October 2013
Strata Stinger Talk October 2013alanfgates Slides from the talk Apache Hive and Stinger, Petabyte scale SQL in Hadoop presented by Arun Murthy, Alan Gates, and Owen O'Malley
Big Data Day LA 2015 - Big Data Day LA 2015 - Applying GeoSpatial Analytics u...
Big Data Day LA 2015 - Big Data Day LA 2015 - Applying GeoSpatial Analytics u...Data Con LA This session will explore how to apply GeoSpatial analytics using Apache Spark on high-velocity streaming (data-in-motion) and high-volume batch (data-at-rest). Demonstrations will be performed throughout the session to cement these concepts.
Dev Ops Training
Dev Ops TrainingSpark Summit The document provides an agenda for a DevOps advanced class on Spark being held in June 2015. The class will cover topics such as RDD fundamentals, Spark runtime architecture, memory and persistence, Spark SQL, PySpark, and Spark Streaming. It will include labs on DevOps 101 and 102. The instructor has over 5 years of experience providing Big Data consulting and training, including over 100 classes taught.
Introduction to Spark on Hadoop
Introduction to Spark on HadoopCarol McDonald This document provides an overview of Apache Spark, including:
- A refresher on MapReduce and its processing model
- An introduction to Spark, describing how it differs from MapReduce in addressing some of MapReduce's limitations
- Examples of how Spark can be used, including for iterative algorithms and interactive queries
- Resources for free online training in Hadoop, MapReduce, Hive and using HBase with MapReduce and Hive
Pivotal Real Time Data Stream Analytics
Pivotal Real Time Data Stream Analyticskgshukla This document discusses using Pivotal's Big Data Suite to build a real-time analytics solution for processing taxi trip data streams. It presents an architecture that uses Spring XD for data ingestion, Spark Streaming for in-memory analytics on 10-second windows, Gemfire for fast data retrieval, and Pivotal HD for long-term storage. The solution demonstrates filtering inconsistent data, finding top traffic areas, and available taxis in real-time. The document highlights how the Big Data Suite provides a complete toolset for data-driven enterprises through its optimized Hadoop distribution, in-memory processing, stream processing, and low-latency data stores.
Kentik Network@Scale (Dan Ellis)
Kentik Network@Scale (Dan Ellis)gvillain This document summarizes a presentation about network traffic visibility and anomaly detection at scale. It discusses the problems with lack of visibility into network traffic data and tools. It introduces Kentik as a solution for traffic visibility that allows infinite granularity storage for months, real-time queries, and anomaly detection. The presentation outlines Kentik's approach of using an ingest and fusion layer to combine different data sources, a storage layer, and a query layer to provide a platform for network traffic analysis and anomaly detection at large scales.
Free Code Friday - Spark Streaming with HBase
Free Code Friday - Spark Streaming with HBaseMapR Technologies Spark Streaming is an extension of the core Spark API that enables continuous data stream processing. It is particularly useful when data needs to be processed in real-time. Carol McDonald, HBase Hadoop Instructor at MapR, will cover:
+ What is Spark Streaming and what is it used for?
+ How does Spark Streaming work?
+ Example code to read, process, and write the processed data
Paradigmas de procesamiento en Big Data: estado actual, tendencias y oportu...
Paradigmas de procesamiento en Big Data: estado actual, tendencias y oportu...Facultad de Informática UCM Charla Invitada del Dr. Rubén Casado impartida el 19 de Noviembre de 2014 en la Facultad de Informática
Predictive Analytics San Diego
Predictive Analytics San DiegoMapR Technologies The unification of big and little data processing onto a single platform is an important requirement for Hadoop. How can this be achieved? Ted Dunning explains what is needed for three important use cases.
Edward King SPEDDEXES 2014
Edward King SPEDDEXES 2014aceas13tern The document discusses using OPeNDAP as a means to provide access to gridded remote sensing data from various sources. It describes setting up an OPeNDAP server to serve various data formats and implementing a system using a PostGIS database to add spatial and temporal metadata to help discover and access the data more easily. Key lessons learned include that while OPeNDAP performs well, significant infrastructure is needed to handle the variety of data formats and projections, and it is tempting to add too many features to the system.
Dynamically Optimizing Queries over Large Scale Data Platforms
Dynamically Optimizing Queries over Large Scale Data PlatformsINRIA-OAK Enterprises are adapting large-scale data processing platforms, such as Hadoop, to gain actionable insights from their "big data". Query optimization is still an open challenge in this environment due to the volume and heterogeneity of data, comprising both structured and un/semi-structured datasets. Moreover, it has become common practice to push business logic close to the data via user-defined functions (UDFs), which are usually opaque to the optimizer, further complicating cost-based optimization. As a result, classical relational query optimization techniques do not fit well in this setting, while at the same time, suboptimal query plans can be disastrous with large datasets. In this talk, I will present new techniques that take into account UDFs and correlations between relations for optimizing queries running on large scale clusters. We introduce "pilot runs", which execute part of the query over a sample of the data to estimate selectivities, and employ a cost-based optimizer that uses these selectivities to choose an initial query plan. Then, we follow a dynamic optimization approach, in which plans evolve as parts of the queries get executed. Our experimental results show that our techniques produce plans that are at least as good as, and up to 2x (4x) better for Jaql (Hive) than, the best hand-written left-deep query plans.
Apache Flink Meetup Munich (November 2015): Flink Overview, Architecture, Int...
Apache Flink Meetup Munich (November 2015): Flink Overview, Architecture, Int...Robert Metzger This presentation held in at Inovex GmbH in Munich in November 2015 was about a general introduction of the streaming space, an overview of Flink and use cases of production users as presented at Flink Forward.
Yahoo compares Storm and Spark
Yahoo compares Storm and SparkChicago Hadoop Users Group Bobby Evans and Tom Graves, the engineering leads for Spark and Storm development at Yahoo will talk about how these technologies are used on Yahoo's grids and reasons why to use one or the other.
Bobby Evans is the low latency data processing architect at Yahoo. He is a PMC member on many Apache projects including Storm, Hadoop, Spark, and Tez. His team is responsible for delivering Storm as a service to all of Yahoo and maintaining Spark on Yarn for Yahoo (Although Tom really does most of that work).
Tom Graves a Senior Software Engineer on the Platform team at Yahoo. He is an Apache PMC member on Hadoop, Spark, and Tez. His team is responsible for delivering and maintaining Spark on Yarn for Yahoo.
Cost-based query optimization in Apache Hive 0.14
Cost-based query optimization in Apache Hive 0.14Julian Hyde Slides from a talk given by Julian Hyde to the Hive User Group Meetup NYC Edition, on October 15th, 2014.
The power of hadoop in business
The power of hadoop in businessMapR Technologies What is the future of Hadoop?
What is the new future of Hadoop?
How is that different from the old one?
Here is how Ted Dunning answered these questions at the winter Hadoop Conference of Japan 2013.
Big Data Analytics Platforms by KTH and RISE SICS
Big Data Analytics Platforms by KTH and RISE SICSBig Data Value Association This document describes Hopsworks, an end-to-end data platform for analytics and machine learning built by KTH and RISE SICS. It provides data ingestion, preparation, experimentation, model training, and deployment capabilities. The platform is built on Apache technologies like Apache Beam, Spark, Flink, Kafka, and uses Kubernetes for orchestration. It also includes a feature store for ML features. The document then discusses Apache Flink and its use for stream processing applications. It provides examples of using Flink's APIs like SQL, CEP, and machine learning. Finally, it introduces the concept of continuous deep analytics and the Arcon framework for unified analytics across streams, tensors, graphs and more through an intermediate
Apache HAWQ Architecture
Apache HAWQ ArchitectureAlexey Grishchenko I gave this talk on the Highload++ conference 2015 in Moscow. Slides have been translated into English. They cover the Apache HAWQ components, its architecture, query processing logic, and also competitive information
Tugdual Grall - Real World Use Cases: Hadoop and NoSQL in Production
Tugdual Grall - Real World Use Cases: Hadoop and NoSQL in ProductionCodemotion What’s important about a technology is what you can use it to do. I’ve looked at what a number of groups are doing with Apache Hadoop and NoSQL in production, and I will relay what worked well for them and what did not. Drawing from real world use cases, I show how people who understand these new approaches can employ them well in conjunction with traditional approaches and existing applications. Thread Detection, Datawarehouse optimization, Marketing Efficiency, Biometric Database are some examples exposed during this presentation.
Apache Hadoop YARN - The Future of Data Processing with Hadoop
Apache Hadoop YARN - The Future of Data Processing with HadoopHortonworks A dive into new data processing capabilities in Hadoop 2.0 with Apache Hadoop YARN, Apache Tez and Apache Hive
Paradigmas de procesamiento en Big Data: estado actual, tendencias y oportu...
Paradigmas de procesamiento en Big Data: estado actual, tendencias y oportu...Facultad de Informática UCM
Ad
More from Databricks (20)
DW Migration Webinar-March 2022.pptx
DW Migration Webinar-March 2022.pptxDatabricks The document discusses migrating a data warehouse to the Databricks Lakehouse Platform. It outlines why legacy data warehouses are struggling, how the Databricks Platform addresses these issues, and key considerations for modern analytics and data warehousing. The document then provides an overview of the migration methodology, approach, strategies, and key takeaways for moving to a lakehouse on Databricks.
Data Lakehouse Symposium | Day 1 | Part 1
Data Lakehouse Symposium | Day 1 | Part 1Databricks The world of data architecture began with applications. Next came data warehouses. Then text was organized into a data warehouse.
Then one day the world discovered a whole new kind of data that was being generated by organizations. The world found that machines generated data that could be transformed into valuable insights. This was the origin of what is today called the data lakehouse. The evolution of data architecture continues today.
Come listen to industry experts describe this transformation of ordinary data into a data architecture that is invaluable to business. Simply put, organizations that take data architecture seriously are going to be at the forefront of business tomorrow.
This is an educational event.
Several of the authors of the book Building the Data Lakehouse will be presenting at this symposium.
Data Lakehouse Symposium | Day 1 | Part 2
Data Lakehouse Symposium | Day 1 | Part 2Databricks The world of data architecture began with applications. Next came data warehouses. Then text was organized into a data warehouse.
Then one day the world discovered a whole new kind of data that was being generated by organizations. The world found that machines generated data that could be transformed into valuable insights. This was the origin of what is today called the data lakehouse. The evolution of data architecture continues today.
Come listen to industry experts describe this transformation of ordinary data into a data architecture that is invaluable to business. Simply put, organizations that take data architecture seriously are going to be at the forefront of business tomorrow.
This is an educational event.
Several of the authors of the book Building the Data Lakehouse will be presenting at this symposium.
Data Lakehouse Symposium | Day 2
Data Lakehouse Symposium | Day 2Databricks The world of data architecture began with applications. Next came data warehouses. Then text was organized into a data warehouse.
Then one day the world discovered a whole new kind of data that was being generated by organizations. The world found that machines generated data that could be transformed into valuable insights. This was the origin of what is today called the data lakehouse. The evolution of data architecture continues today.
Come listen to industry experts describe this transformation of ordinary data into a data architecture that is invaluable to business. Simply put, organizations that take data architecture seriously are going to be at the forefront of business tomorrow.
This is an educational event.
Several of the authors of the book Building the Data Lakehouse will be presenting at this symposium.
Data Lakehouse Symposium | Day 4
Data Lakehouse Symposium | Day 4Databricks The document discusses the challenges of modern data, analytics, and AI workloads. Most enterprises struggle with siloed data systems that make integration and productivity difficult. The future of data lies with a data lakehouse platform that can unify data engineering, analytics, data warehousing, and machine learning workloads on a single open platform. The Databricks Lakehouse platform aims to address these challenges with its open data lake approach and capabilities for data engineering, SQL analytics, governance, and machine learning.
5 Critical Steps to Clean Your Data Swamp When Migrating Off of Hadoop
5 Critical Steps to Clean Your Data Swamp When Migrating Off of HadoopDatabricks In this session, learn how to quickly supplement your on-premises Hadoop environment with a simple, open, and collaborative cloud architecture that enables you to generate greater value with scaled application of analytics and AI on all your data. You will also learn five critical steps for a successful migration to the Databricks Lakehouse Platform along with the resources available to help you begin to re-skill your data teams.
Democratizing Data Quality Through a Centralized Platform
Democratizing Data Quality Through a Centralized PlatformDatabricks Bad data leads to bad decisions and broken customer experiences. Organizations depend on complete and accurate data to power their business, maintain efficiency, and uphold customer trust. With thousands of datasets and pipelines running, how do we ensure that all data meets quality standards, and that expectations are clear between producers and consumers? Investing in shared, flexible components and practices for monitoring data health is crucial for a complex data organization to rapidly and effectively scale.
At Zillow, we built a centralized platform to meet our data quality needs across stakeholders. The platform is accessible to engineers, scientists, and analysts, and seamlessly integrates with existing data pipelines and data discovery tools. In this presentation, we will provide an overview of our platform’s capabilities, including:
Giving producers and consumers the ability to define and view data quality expectations using a self-service onboarding portal
Performing data quality validations using libraries built to work with spark
Dynamically generating pipelines that can be abstracted away from users
Flagging data that doesn’t meet quality standards at the earliest stage and giving producers the opportunity to resolve issues before use by downstream consumers
Exposing data quality metrics alongside each dataset to provide producers and consumers with a comprehensive picture of health over time
Learn to Use Databricks for Data Science
Learn to Use Databricks for Data ScienceDatabricks Data scientists face numerous challenges throughout the data science workflow that hinder productivity. As organizations continue to become more data-driven, a collaborative environment is more critical than ever — one that provides easier access and visibility into the data, reports and dashboards built against the data, reproducibility, and insights uncovered within the data.. Join us to hear how Databricks’ open and collaborative platform simplifies data science by enabling you to run all types of analytics workloads, from data preparation to exploratory analysis and predictive analytics, at scale — all on one unified platform.
Why APM Is Not the Same As ML Monitoring
Why APM Is Not the Same As ML MonitoringDatabricks Application performance monitoring (APM) has become the cornerstone of software engineering allowing engineering teams to quickly identify and remedy production issues. However, as the world moves to intelligent software applications that are built using machine learning, traditional APM quickly becomes insufficient to identify and remedy production issues encountered in these modern software applications.
As a lead software engineer at NewRelic, my team built high-performance monitoring systems including Insights, Mobile, and SixthSense. As I transitioned to building ML Monitoring software, I found the architectural principles and design choices underlying APM to not be a good fit for this brand new world. In fact, blindly following APM designs led us down paths that would have been better left unexplored.
In this talk, I draw upon my (and my team’s) experience building an ML Monitoring system from the ground up and deploying it on customer workloads running large-scale ML training with Spark as well as real-time inference systems. I will highlight how the key principles and architectural choices of APM don’t apply to ML monitoring. You’ll learn why, understand what ML Monitoring can successfully borrow from APM, and hear what is required to build a scalable, robust ML Monitoring architecture.
The Function, the Context, and the Data—Enabling ML Ops at Stitch Fix
The Function, the Context, and the Data—Enabling ML Ops at Stitch FixDatabricks Autonomy and ownership are core to working at Stitch Fix, particularly on the Algorithms team. We enable data scientists to deploy and operate their models independently, with minimal need for handoffs or gatekeeping. By writing a simple function and calling out to an intuitive API, data scientists can harness a suite of platform-provided tooling meant to make ML operations easy. In this talk, we will dive into the abstractions the Data Platform team has built to enable this. We will go over the interface data scientists use to specify a model and what that hooks into, including online deployment, batch execution on Spark, and metrics tracking and visualization.
Stage Level Scheduling Improving Big Data and AI Integration
Stage Level Scheduling Improving Big Data and AI IntegrationDatabricks In this talk, I will dive into the stage level scheduling feature added to Apache Spark 3.1. Stage level scheduling extends upon Project Hydrogen by improving big data ETL and AI integration and also enables multiple other use cases. It is beneficial any time the user wants to change container resources between stages in a single Apache Spark application, whether those resources are CPU, Memory or GPUs. One of the most popular use cases is enabling end-to-end scalable Deep Learning and AI to efficiently use GPU resources. In this type of use case, users read from a distributed file system, do data manipulation and filtering to get the data into a format that the Deep Learning algorithm needs for training or inference and then sends the data into a Deep Learning algorithm. Using stage level scheduling combined with accelerator aware scheduling enables users to seamlessly go from ETL to Deep Learning running on the GPU by adjusting the container requirements for different stages in Spark within the same application. This makes writing these applications easier and can help with hardware utilization and costs.
There are other ETL use cases where users want to change CPU and memory resources between stages, for instance there is data skew or perhaps the data size is much larger in certain stages of the application. In this talk, I will go over the feature details, cluster requirements, the API and use cases. I will demo how the stage level scheduling API can be used by Horovod to seamlessly go from data preparation to training using the Tensorflow Keras API using GPUs.
The talk will also touch on other new Apache Spark 3.1 functionality, such as pluggable caching, which can be used to enable faster dataframe access when operating from GPUs.
Simplify Data Conversion from Spark to TensorFlow and PyTorch
Simplify Data Conversion from Spark to TensorFlow and PyTorchDatabricks In this talk, I would like to introduce an open-source tool built by our team that simplifies the data conversion from Apache Spark to deep learning frameworks.
Imagine you have a large dataset, say 20 GBs, and you want to use it to train a TensorFlow model. Before feeding the data to the model, you need to clean and preprocess your data using Spark. Now you have your dataset in a Spark DataFrame. When it comes to the training part, you may have the problem: How can I convert my Spark DataFrame to some format recognized by my TensorFlow model?
The existing data conversion process can be tedious. For example, to convert an Apache Spark DataFrame to a TensorFlow Dataset file format, you need to either save the Apache Spark DataFrame on a distributed filesystem in parquet format and load the converted data with third-party tools such as Petastorm, or save it directly in TFRecord files with spark-tensorflow-connector and load it back using TFRecordDataset. Both approaches take more than 20 lines of code to manage the intermediate data files, rely on different parsing syntax, and require extra attention for handling vector columns in the Spark DataFrames. In short, all these engineering frictions greatly reduced the data scientists’ productivity.
The Databricks Machine Learning team contributed a new Spark Dataset Converter API to Petastorm to simplify these tedious data conversion process steps. With the new API, it takes a few lines of code to convert a Spark DataFrame to a TensorFlow Dataset or a PyTorch DataLoader with default parameters.
In the talk, I will use an example to show how to use the Spark Dataset Converter to train a Tensorflow model and how simple it is to go from single-node training to distributed training on Databricks.
Scaling your Data Pipelines with Apache Spark on Kubernetes
Scaling your Data Pipelines with Apache Spark on KubernetesDatabricks There is no doubt Kubernetes has emerged as the next generation of cloud native infrastructure to support a wide variety of distributed workloads. Apache Spark has evolved to run both Machine Learning and large scale analytics workloads. There is growing interest in running Apache Spark natively on Kubernetes. By combining the flexibility of Kubernetes and scalable data processing with Apache Spark, you can run any data and machine pipelines on this infrastructure while effectively utilizing resources at disposal.
In this talk, Rajesh Thallam and Sougata Biswas will share how to effectively run your Apache Spark applications on Google Kubernetes Engine (GKE) and Google Cloud Dataproc, orchestrate the data and machine learning pipelines with managed Apache Airflow on GKE (Google Cloud Composer). Following topics will be covered: – Understanding key traits of Apache Spark on Kubernetes- Things to know when running Apache Spark on Kubernetes such as autoscaling- Demonstrate running analytics pipelines on Apache Spark orchestrated with Apache Airflow on Kubernetes cluster.
Scaling and Unifying SciKit Learn and Apache Spark Pipelines
Scaling and Unifying SciKit Learn and Apache Spark PipelinesDatabricks Pipelines have become ubiquitous, as the need for stringing multiple functions to compose applications has gained adoption and popularity. Common pipeline abstractions such as “fit” and “transform” are even shared across divergent platforms such as Python Scikit-Learn and Apache Spark.
Scaling pipelines at the level of simple functions is desirable for many AI applications, however is not directly supported by Ray’s parallelism primitives. In this talk, Raghu will describe a pipeline abstraction that takes advantage of Ray’s compute model to efficiently scale arbitrarily complex pipeline workflows. He will demonstrate how this abstraction cleanly unifies pipeline workflows across multiple platforms such as Scikit-Learn and Spark, and achieves nearly optimal scale-out parallelism on pipelined computations.
Attendees will learn how pipelined workflows can be mapped to Ray’s compute model and how they can both unify and accelerate their pipelines with Ray.
Sawtooth Windows for Feature Aggregations
Sawtooth Windows for Feature AggregationsDatabricks In this talk about zipline, we will introduce a new type of windowing construct called a sawtooth window. We will describe various properties about sawtooth windows that we utilize to achieve online-offline consistency, while still maintaining high-throughput, low-read latency and tunable write latency for serving machine learning features.We will also talk about a simple deployment strategy for correcting feature drift – due operations that are not “abelian groups”, that operate over change data.
Redis + Apache Spark = Swiss Army Knife Meets Kitchen Sink
Redis + Apache Spark = Swiss Army Knife Meets Kitchen SinkDatabricks We want to present multiple anti patterns utilizing Redis in unconventional ways to get the maximum out of Apache Spark.All examples presented are tried and tested in production at Scale at Adobe. The most common integration is spark-redis which interfaces with Redis as a Dataframe backing Store or as an upstream for Structured Streaming. We deviate from the common use cases to explore where Redis can plug gaps while scaling out high throughput applications in Spark.
Niche 1 : Long Running Spark Batch Job – Dispatch New Jobs by polling a Redis Queue
· Why?
o Custom queries on top a table; We load the data once and query N times
· Why not Structured Streaming
· Working Solution using Redis
Niche 2 : Distributed Counters
· Problems with Spark Accumulators
· Utilize Redis Hashes as distributed counters
· Precautions for retries and speculative execution
· Pipelining to improve performance
Re-imagine Data Monitoring with whylogs and Spark
Re-imagine Data Monitoring with whylogs and SparkDatabricks In the era of microservices, decentralized ML architectures and complex data pipelines, data quality has become a bigger challenge than ever. When data is involved in complex business processes and decisions, bad data can, and will, affect the bottom line. As a result, ensuring data quality across the entire ML pipeline is both costly, and cumbersome while data monitoring is often fragmented and performed ad hoc. To address these challenges, we built whylogs, an open source standard for data logging. It is a lightweight data profiling library that enables end-to-end data profiling across the entire software stack. The library implements a language and platform agnostic approach to data quality and data monitoring. It can work with different modes of data operations, including streaming, batch and IoT data.
In this talk, we will provide an overview of the whylogs architecture, including its lightweight statistical data collection approach and various integrations. We will demonstrate how the whylogs integration with Apache Spark achieves large scale data profiling, and we will show how users can apply this integration into existing data and ML pipelines.
Raven: End-to-end Optimization of ML Prediction Queries
Raven: End-to-end Optimization of ML Prediction QueriesDatabricks Machine learning (ML) models are typically part of prediction queries that consist of a data processing part (e.g., for joining, filtering, cleaning, featurization) and an ML part invoking one or more trained models. In this presentation, we identify significant and unexplored opportunities for optimization. To the best of our knowledge, this is the first effort to look at prediction queries holistically, optimizing across both the ML and SQL components.
We will present Raven, an end-to-end optimizer for prediction queries. Raven relies on a unified intermediate representation that captures both data processing and ML operators in a single graph structure.
This allows us to introduce optimization rules that
(i) reduce unnecessary computations by passing information between the data processing and ML operators
(ii) leverage operator transformations (e.g., turning a decision tree to a SQL expression or an equivalent neural network) to map operators to the right execution engine, and
(iii) integrate compiler techniques to take advantage of the most efficient hardware backend (e.g., CPU, GPU) for each operator.
We have implemented Raven as an extension to Spark’s Catalyst optimizer to enable the optimization of SparkSQL prediction queries. Our implementation also allows the optimization of prediction queries in SQL Server. As we will show, Raven is capable of improving prediction query performance on Apache Spark and SQL Server by up to 13.1x and 330x, respectively. For complex models, where GPU acceleration is beneficial, Raven provides up to 8x speedup compared to state-of-the-art systems. As part of the presentation, we will also give a demo showcasing Raven in action.
Processing Large Datasets for ADAS Applications using Apache Spark
Processing Large Datasets for ADAS Applications using Apache SparkDatabricks Semantic segmentation is the classification of every pixel in an image/video. The segmentation partitions a digital image into multiple objects to simplify/change the representation of the image into something that is more meaningful and easier to analyze [1][2]. The technique has a wide variety of applications ranging from perception in autonomous driving scenarios to cancer cell segmentation for medical diagnosis.
Exponential growth in the datasets that require such segmentation is driven by improvements in the accuracy and quality of the sensors generating the data extending to 3D point cloud data. This growth is further compounded by exponential advances in cloud technologies enabling the storage and compute available for such applications. The need for semantically segmented datasets is a key requirement to improve the accuracy of inference engines that are built upon them.
Streamlining the accuracy and efficiency of these systems directly affects the value of the business outcome for organizations that are developing such functionalities as a part of their AI strategy.
This presentation details workflows for labeling, preprocessing, modeling, and evaluating performance/accuracy. Scientists and engineers leverage domain-specific features/tools that support the entire workflow from labeling the ground truth, handling data from a wide variety of sources/formats, developing models and finally deploying these models. Users can scale their deployments optimally on GPU-based cloud infrastructure to build accelerated training and inference pipelines while working with big datasets. These environments are optimized for engineers to develop such functionality with ease and then scale against large datasets with Spark-based clusters on the cloud.
Massive Data Processing in Adobe Using Delta Lake
Massive Data Processing in Adobe Using Delta LakeDatabricks At Adobe Experience Platform, we ingest TBs of data every day and manage PBs of data for our customers as part of the Unified Profile Offering. At the heart of this is a bunch of complex ingestion of a mix of normalized and denormalized data with various linkage scenarios power by a central Identity Linking Graph. This helps power various marketing scenarios that are activated in multiple platforms and channels like email, advertisements etc. We will go over how we built a cost effective and scalable data pipeline using Apache Spark and Delta Lake and share our experiences.
What are we storing?
Multi Source – Multi Channel Problem
Data Representation and Nested Schema Evolution
Performance Trade Offs with Various formats
Go over anti-patterns used
(String FTW)
Data Manipulation using UDFs
Writer Worries and How to Wipe them Away
Staging Tables FTW
Datalake Replication Lag Tracking
Performance Time!
Ad
Recently uploaded (20)
Simple_AI_Explanation_English somplr.pptx
Simple_AI_Explanation_English somplr.pptxssuser2aa19f Ai artificial intelligence ai with python course first upload
Just-In-Timeasdfffffffghhhhhhhhhhj Systems.ppt
Just-In-Timeasdfffffffghhhhhhhhhhj Systems.pptssuser5f8f49 Just-in-time: Repetitive production system in which processing and movement of materials and goods occur just as they are needed, usually in small batches
JIT is characteristic of lean production systems
JIT operates with very little “fat”
Thingyan is now a global treasure! See how people around the world are search...
Thingyan is now a global treasure! See how people around the world are search...Pixellion We explored how the world searches for 'Thingyan' and 'သင်္ကြန်' and this year, it’s extra special. Thingyan is now officially recognized as a World Intangible Cultural Heritage by UNESCO! Dive into the trends and celebrate with us!
How iCode cybertech Helped Me Recover My Lost Funds
How iCode cybertech Helped Me Recover My Lost Fundsireneschmid345 I was devastated when I realized that I had fallen victim to an online fraud, losing a significant amount of money in the process. After countless hours of searching for a solution, I came across iCode cybertech. From the moment I reached out to their team, I felt a sense of hope that I can recommend iCode Cybertech enough for anyone who has faced similar challenges. Their commitment to helping clients and their exceptional service truly set them apart. Thank you, iCode cybertech, for turning my situation around!
[email protected]
CTS EXCEPTIONSPrediction of Aluminium wire rod physical properties through AI...
CTS EXCEPTIONSPrediction of Aluminium wire rod physical properties through AI...ThanushsaranS Prediction of Aluminium wire rod physical properties through AI, ML
or any modern technique for better productivity and quality control.
GenAI for Quant Analytics: survey-analytics.ai
GenAI for Quant Analytics: survey-analytics.aiInspirient Pitched at the Greenbook Insight Innovation Competition as apart of IIEX North America 2025 on 30 April 2025 in Washington, D.C.
Join us at survey-analytics.ai!
04302025_CCC TUG_DataVista: The Design Story
04302025_CCC TUG_DataVista: The Design Storyccctableauusergroup CCCCO and WestEd share the story behind how DataVista came together from a design standpoint and in Tableau.
Deloitte Analytics - Applying Process Mining in an audit context
Deloitte Analytics - Applying Process Mining in an audit contextProcess mining Evangelist Mieke Jans is a Manager at Deloitte Analytics Belgium. She learned about process mining from her PhD supervisor while she was collaborating with a large SAP-using company for her dissertation.
Mieke extended her research topic to investigate the data availability of process mining data in SAP and the new analysis possibilities that emerge from it. It took her 8-9 months to find the right data and prepare it for her process mining analysis. She needed insights from both process owners and IT experts. For example, one person knew exactly how the procurement process took place at the front end of SAP, and another person helped her with the structure of the SAP-tables. She then combined the knowledge of these different persons.
Perencanaan Pengendalian-Proyek-Konstruksi-MS-PROJECT.pptx
Perencanaan Pengendalian-Proyek-Konstruksi-MS-PROJECT.pptxPareaRusan planning and calculation monitoring project
Day 1 - Lab 1 Reconnaissance Scanning with NMAP, Vulnerability Assessment wit...
Day 1 - Lab 1 Reconnaissance Scanning with NMAP, Vulnerability Assessment wit...Abodahab IHOY78T6R5E45TRYTUYIU
Large-Scaled Telematics Analytics in Apache Spark with Wayne Zhang and Neil Parker
- 1. Wayne Zhang, Uber Neil Parker, Uber Large-Scaled Telematics Analytics in Apache Spark #DS3SAIS
- 2. Agenda • Telematics introduction • Eng pipeline 2
- 3. Telematics 3 Source: Smartphone-based Vehicle Telematics - A Ten-Year Anniversary - Wide availability - Cheap - Short upgrade cycle - Lower quality - Measure phone motion
- 4. Core Pipeline 4 Preprocessing & Transformation Sensor Data Collection Vehicle Movement Inference Driving Behavior Inference
- 5. Phone Sensor Data 5 ● GPS ○ Absolute location, velocity and time ○ Low frequency (<= 1 point per second) ● IMU ○ Relative motion of phone ■ Accelerometer: 3D linear acceleration ■ Gyroscope: 3D angular velocity ○ High frequency (>20 points per second)
- 8. Long Stop Detection 8 Long Stop Long Stop
- 11. Engineering 11 • Pipeline – Past – Present • Problems millions trips per day xTbs sensor data per day xPbs per year How big is our data?
- 12. Data Pipeline - Past (Streaming) 12 Input Schema Topic (Kafka) Transform Samza Job Output Schema Topic (Kafka) • Realtime
- 13. Data Pipeline - Present (Batch) 13 Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS) Select logic in SparkSQL • Flexible
- 14. Data Pipeline - Actuality (λ) 14 Input Schema Topic (Kafka) Transform Samza Job Output Schema Topic (Kafka) Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS) Business Logic (JVM)
- 15. Data Pipeline - Present 15 Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS) Select logic in SparkSQL
- 16. Data Pipeline 16 Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS) Input Hive Table (HDFS) Join logic in SparkSQL
- 17. Data Pipeline 17 Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS) Input Hive Table (HDFS) Output Hive Table (HDFS)
- 18. Scheduler (Every 24hrs) Data Pipeline 18 Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS) Input Hive Table (HDFS) Output Hive Table (HDFS)
- 19. Data Pipeline 19 Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS)
- 20. Data Pipeline 20 Input Hive Table (HDFS) Transform Spark Job Output / Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS)
- 21. Data Pipeline - Actuality 21
- 22. • Data Sources • OOM Errors • Too many Namenodes Eng Problems 22
- 23. Eng Problems - Data Sources 23 Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS) Input Thrift Binaries (S3) Join logic in SparkSQL Doesn’t work
- 24. 24 Eng Problems - Data Sources Input Thrift Binaries (S3) Transform Spark Job Output Hive Table (HDFS) github.com/airbnb/airbnb-spark-thrift
- 25. 25 Aside: Encode Decode Invariant Java Thrift Class Instance Spark SQL Row
- 26. 26 Aside: Encode Decode Invariant Java Thrift Class Instance Spark SQL Row Generate random data to test (ScalaCheck Library)
- 27. Eng Problems - Data Sources 27 Input Hive Table (HDFS) Transform Spark Job Output Hive Table (HDFS) Join logic in SparkSQL Works Input Thrift Binaries (S3) Transform Spark Job Output Hive Table (HDFS)
- 28. • If hitting OOM related issues, usually increasing partitions help – `spark.sql.shuffle.partitions=X • Where x > 200 (default) • Might also play with executor-cores and memory settings Eng Problems - OOM Errors 28
- 29. • If we have more partitions, we create more files • Solution: Merge file after job run – github.com/apache/parquet-mr/tree/master/parquet-tools Eng Problems - # Namenode 29
- 30. Looking Towards the Future 30
- 31. Thank You! (And thanks for everyone @ Uber who helped us) 31 Email us if you have any questions: [email protected] [email protected]