Application and Challenges of Streaming Analytics and Machine Learning on Multi-Variate Time Series Data for Smart Manufacturing
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CyberMLToolkit: Anomaly Detection as a Scalable Generic Service Over Apache S...
CyberMLToolkit: Anomaly Detection as a Scalable Generic Service Over Apache S...Databricks Cybercrime is one the greatest threats to every company in the world today and a major problem for mankind in general. The damage due to Cybercrime is estimated to be around $6 Trillion By 2021. Security professionals are struggling to cope with the threat. As a result, powerful and easy to use tools are necessary to aid in this battle. For this purpose we created an anomaly detection framework focused on security which can identify anomalous access patterns. It is built on top of Apache Spark and can be applied in parallel over multiple tenants. This allows the model to be trained over the data of thousands of customers over a Databricks cluster within less than an hour. The model leverages proven technologies from Recommendation Engines to produce high quality anomalies. We thoroughly evaluated the model’s ability to identify actual anomalies by using synthetically generated data and also by creating an actual attack and showing that the model clearly identifies the attack as anomalous behavior. We plan to open source this library as part of a cyber-ML toolkit we will be offering.
Auto-Pilot for Apache Spark Using Machine Learning
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Apache Spark At Scale in the Cloud
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You may have even less control over the size and format of your raw input files. Performance tuning is an iterative and experimental process. It’s frustrating with very large datasets: what worked great with 30 billion rows may not work at all with 400 billion rows. But with strategic optimizations and compromises, 50+ TiB datasets can be no big deal.
By using Spark UI and simple metrics, explore how to diagnose and remedy issues on jobs:
Sizing the cluster based on your dataset (shuffle partitions)
Ingestion challenges – well begun is half done (globbing S3, small files)
Managing memory (sorting GC – when to go parallel, when to go G1, when offheap can help you)
Shuffle (give a little to get a lot – configs for better out of box shuffle) – Spill (partitioning for the win)
Scheduling (FAIR vs FIFO, is there a difference for your pipeline?)
Caching and persistence (it’s the cost of doing business, so what are your options?)
Fault tolerance (blacklisting, speculation, task reaping)
Making the best of a bad deal (skew joins, windowing, UDFs, very large query plans)
Writing to S3 (dealing with write partitions, HDFS and s3DistCp vs writing directly to S3)
Automated Production Ready ML at Scale
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Tactical Data Science Tips: Python and Spark Together
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Apache Spark AI Use Case in Telco: Network Quality Analysis and Prediction wi...
Apache Spark AI Use Case in Telco: Network Quality Analysis and Prediction wi...Databricks In this talk, we will present how we analyze, predict, and visualize network quality data, as a spark AI use case in a telecommunications company. SK Telecom is the largest wireless telecommunications provider in South Korea with 300,000 cells and 27 million subscribers. These 300,000 cells generate data every 10 seconds, the total size of which is 60TB, 120 billion records per day.
In order to address previous problems of Spark based on HDFS, we have developed a new data store for SparkSQL consisting of Redis and RocksDB that allows us to distribute and store these data in real time and analyze it right away, We were not satisfied with being able to analyze network quality in real-time, we tried to predict network quality in near future in order to quickly detect and recover network device failures, by designing network signal pattern-aware DNN model and a new in-memory data pipeline from spark to tensorflow.
In addition, by integrating Apache Livy and MapboxGL to SparkSQL and our new store, we have built a geospatial visualization system that shows the current population and signal strength of 300,000 cells on the map in real time.
AI on Spark for Malware Analysis and Anomalous Threat Detection
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Blue Pill/Red Pill: The Matrix of Thousands of Data Streams
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Stream, Stream, Stream: Different Streaming Methods with Apache Spark and Kafka
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Kafka and Spark Streaming for stateless and stateful use-cases
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Our decision to evaluate Spark as our stream processing engine was primarily led by the following considerations: 1) Ease of development for the team (already familiar with spark for batch), 2) the scope/requirements of our problem, 3) re-usability of code from spark batch jobs, and 4) Spark support from infrastructure teams within the company.
In this session, we will present our experience using Spark for stream processing unbounded datasets in the personalization space. The datasets consisted of, but were not limited, to the stream of playback events that are used as feedback for all personalization algorithms. These plays are used to extract specific behaviors which are highly predictive of a customer’s enjoyment of our service. This dataset is massive and has to be further enriched by other online and offline Netflix data sources. These datasets, when consumed by our machine learning models, directly affect the customer’s personalized experience, which means that the impact is high and tolerance for failure is low. We’ll talk about the experiments we did to compare Spark with other streaming solutions like Apache Flink , the impact that we had on our customers, and most importantly, the challenges we faced.
Take-aways for the audience:
1) A great example of stream processing large, personalization datasets at scale.
2) An increased awareness of the costs/requirements for making the transition from batch to streaming successfully.
3) Exposure to some of the technical challenges that should be expected along the way.
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Speaker: Yaron Ekshtein
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Distributed Models Over Distributed Data with MLflow, Pyspark, and Pandas
Distributed Models Over Distributed Data with MLflow, Pyspark, and PandasDatabricks Does more data always improve ML models? Is it better to use distributed ML instead of single node ML?
In this talk I will show that while more data often improves DL models in high variance problem spaces (with semi or unstructured data) such as NLP, image, video more data does not significantly improve high bias problem spaces where traditional ML is more appropriate. Additionally, even in the deep learning domain, single node models can still outperform distributed models via transfer learning.
Data scientists have pain points running many models in parallel automating the experimental set up. Getting others (especially analysts) within an organization to use their models Databricks solves these problems using pandas udfs, ml runtime and MLflow.
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Learnings Using Spark Streaming and DataFrames for Walmart Search: Spark Summ...
Learnings Using Spark Streaming and DataFrames for Walmart Search: Spark Summ...Spark Summit In this presentation, we are going to talk about the state of the art infrastructure we have established at Walmart Labs for the Search product using Spark Streaming and DataFrames. First, we have been able to successfully use multiple micro batch spark streaming pipelines to update and process information like product availability, pick up today etc. along with updating our product catalog information in our search index to up to 10,000 kafka events per sec in near real-time. Earlier, all the product catalog changes in the index had a 24 hour delay, using Spark Streaming we have made it possible to see these changes in near real-time. This addition has provided a great boost to the business by giving the end-costumers instant access to features likes availability of a product, store pick up, etc.
Second, we have built a scalable anomaly detection framework purely using Spark Data Frames that is being used by our data pipelines to detect abnormality in search data. Anomaly detection is an important problem not only in the search domain but also many domains such as performance monitoring, fraud detection, etc. During this, we realized that not only are Spark DataFrames able to process information faster but also are more flexible to work with. One could write hive like queries, pig like code, UDFs, UDAFs, python like code etc. all at the same place very easily and can build DataFrame template which can be used and reused by multiple teams effectively. We believe that if implemented correctly Spark Data Frames can potentially replace hive/pig in big data space and have the potential of becoming unified data language.
We conclude that Spark Streaming and Data Frames are the key to processing extremely large streams of data in real-time with ease of use.
Debugging Big Data Analytics in Apache Spark with BigDebug with Muhammad Gulz...
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To emulate interactive step-wise debugging without reducing throughput, BigDebug provides simulated breakpoints that enable a user to inspect a program without actually pausing the entire distributed computation. It also supports on-demand watchpoints that enable a user to retrieve intermediate data using a guard predicate and transfer the selected data on demand. To understand the flow of individual records within a pipeline of RDD transformations, BigDebug provides data provenance capability, which can help understand how errors propagate through data processing steps. To support efficient trial-and-error debugging, BigDebug enables users to change program logic in response to an error at runtime through a realtime code fix feature, and selectively replay the execution from that step. Finally, BigDebug proposes an automated fault localization service that leverages all the above features together to isolate failure-inducing inputs, diagnose the root cause of an error, and resume the workflow for only affected data and code.
The BigDebug system should contribute to improving Spark developerproductivity and the correctness of their Big Data applications. This big data debugging effort is led by UCLA Professors Miryung Kim and Tyson Condie, and produced several research papers in top Software Engineering and Database conferences. The current version of BigDebug is publicly available at https://sites.google.com/site/sparkbigdebug/.
Simplify and Scale Data Engineering Pipelines with Delta Lake
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Data Warehousing with Spark Streaming at Zalando
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The talk will cover challenges in our fashion data platform and a detailed architectural deep dive about separation of integration from enrichment, providing streams as well as snapshots and feeding the data to distributed data marts. Finally, lessons learned and best practices about Delta’s MERGE command, Scala API vs Spark SQL and schema evolution give more insights and guidance for similar use cases.
Lessons Learned from Using Spark for Evaluating Road Detection at BMW Autonom...
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Insights Without Tradeoffs: Using Structured Streaming
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Speaker: Michael Armbrust
Video: http://go.databricks.com/videos/spark-summit-east-2017/using-structured-streaming-apache-spark
This talk was originally presented at Spark Summit East 2017.
Analyzing 2TB of Raw Trace Data from a Manufacturing Process: A First Use Cas...
Analyzing 2TB of Raw Trace Data from a Manufacturing Process: A First Use Cas...Databricks As the development of semiconductor devices, manufacturing system leads to improve productivity and efficiency for wafer fabrication. Owing to such improvement, the number of wafers yielded from the fabrication process has been rapidly increasing. However, current software systems for semiconductor wafers are not aimed at processing large number of wafers. To resolve this issue, the BISTel (a world-class provider of manufacturing intelligence solutions and services for manufacturers) tries to build several products for big data such as Trace Analyzer (TA) and Map Analyzer (MA) using Apache Spark. TA is to analyze raw trace data from a manufacturing process. It captures details on all variable changes, big and small and give the traces' statistical summary (i.e.: min, max, slope, average, etc.). Several BISTel's customers, which are the top-tier semiconductor company in the world use the TA to analyze the massive raw trace data from their manufacturing process. Especially, TA is able to manage terabytes of data by applying Apache Spark's APIs. MA is an advanced pattern recognition tool that sorts wafer yield maps and automatically identify common yield loss patterns. Also, some semiconductor companies use MA to identify clustering patterns for more than 100,000 wafers, which can be considered as big data in the semiconductor area. This talk will introduce these two products which are developed based on the Apache Spark and present how to handle the large-scale semiconductor data in the aspects of software techniques.
Speakers: Seungchul Lee, Daeyoung Kim
Apache Spark Model Deployment 
Apache Spark Model Deployment Databricks Tech-Talk at Bay Area Spark Meetup
Apache Spark(tm) has rapidly become a key tool for data scientists to explore, understand and transform massive datasets and to build and train advanced machine learning models. The question then becomes, how do I deploy these model to a production environment. How do I embed what I have learned into customer facing data applications. Like all things in engineering, it depends.
In this meetup, we will discuss best practices from Databricks on how our customers productionize machine learning models and do a deep dive with actual customer case studies and live demos of a few example architectures and code in Python and Scala. We will also briefly touch on what is coming in Apache Spark 2.X with model serialization and scoring options.
Streaming Analytics for Financial Enterprises
Streaming Analytics for Financial EnterprisesDatabricks Streaming Analytics (or Fast Data processing) is becoming an increasingly popular subject in the financial sector. There are two main reasons for this development. First, more and more data has to be analyze in real-time to prevent fraud; all transactions that are being processed by banks have to pass and ever-growing number of tests to make sure that the money is coming from and going to legitimate sources. Second, customers want to have friction-less mobile experiences while managing their money, such as immediate notifications and personal advise based on their online behavior and other users’ actions.
A typical streaming analytics solution follows a ‘pipes and filters’ pattern that consists of three main steps: detecting patterns on raw event data (Complex Event Processing), evaluating the outcomes with the aid of business rules and machine learning algorithms, and deciding on the next action. At the core of this architecture is the execution of predictive models that operate on enormous amounts of never-ending data streams.
In this talk, I’ll present an architecture for streaming analytics solutions that covers many use cases that follow this pattern: actionable insights, fraud detection, log parsing, traffic analysis, factory data, the IoT, and others. I’ll go through a few architecture challenges that will arise when dealing with streaming data, such as latency issues, event time vs server time, and exactly-once processing. The solution is build on the KISSS stack: Kafka, Ignite, and Spark Structured Streaming. The solution is open source and available on GitHub.
Industry 4.0 Readiness Roadmap
Industry 4.0 Readiness RoadmapRakesh Jaiswal This document discusses Industry 4.0 and the transition to smart manufacturing. It outlines a roadmap with the following phases:
1. Develop a platform aligned with Lambda Architecture separating data ingestion, streaming, and storage layers. Introduce a data lake.
2. Migrate data to the data lake using technologies like Kafka, MQTT, and REST. Use Redis, Spark, and MongoDB for real-time analytics.
3. Integrate migrated applications and introduce ML models initially using existing data sets to train linear models. Gradually transition to more advanced hybrid models like SOM-SVM.
Analytics&IoT
Analytics&IoTSelvaraj Kesavan This document discusses analytics and IoT. It covers key topics like data collection from IoT sensors, data storage and processing using big data tools, and performing descriptive, predictive, and prescriptive analytics. Cloud platforms and visualization tools that can be used to build end-to-end IoT and analytics solutions are also presented. The document provides an overview of building IoT solutions for collecting, analyzing, and gaining insights from sensor data.
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1) A great example of stream processing large, personalization datasets at scale.
2) An increased awareness of the costs/requirements for making the transition from batch to streaming successfully.
3) Exposure to some of the technical challenges that should be expected along the way.
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In this talk I will show that while more data often improves DL models in high variance problem spaces (with semi or unstructured data) such as NLP, image, video more data does not significantly improve high bias problem spaces where traditional ML is more appropriate. Additionally, even in the deep learning domain, single node models can still outperform distributed models via transfer learning.
Data scientists have pain points running many models in parallel automating the experimental set up. Getting others (especially analysts) within an organization to use their models Databricks solves these problems using pandas udfs, ml runtime and MLflow.
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Second, we have built a scalable anomaly detection framework purely using Spark Data Frames that is being used by our data pipelines to detect abnormality in search data. Anomaly detection is an important problem not only in the search domain but also many domains such as performance monitoring, fraud detection, etc. During this, we realized that not only are Spark DataFrames able to process information faster but also are more flexible to work with. One could write hive like queries, pig like code, UDFs, UDAFs, python like code etc. all at the same place very easily and can build DataFrame template which can be used and reused by multiple teams effectively. We believe that if implemented correctly Spark Data Frames can potentially replace hive/pig in big data space and have the potential of becoming unified data language.
We conclude that Spark Streaming and Data Frames are the key to processing extremely large streams of data in real-time with ease of use.
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The BigDebug system should contribute to improving Spark developerproductivity and the correctness of their Big Data applications. This big data debugging effort is led by UCLA Professors Miryung Kim and Tyson Condie, and produced several research papers in top Software Engineering and Database conferences. The current version of BigDebug is publicly available at https://sites.google.com/site/sparkbigdebug/.
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Data Warehousing with Spark Streaming at Zalando
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The talk will cover challenges in our fashion data platform and a detailed architectural deep dive about separation of integration from enrichment, providing streams as well as snapshots and feeding the data to distributed data marts. Finally, lessons learned and best practices about Delta’s MERGE command, Scala API vs Spark SQL and schema evolution give more insights and guidance for similar use cases.
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Insights Without Tradeoffs: Using Structured Streaming
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Speaker: Michael Armbrust
Video: http://go.databricks.com/videos/spark-summit-east-2017/using-structured-streaming-apache-spark
This talk was originally presented at Spark Summit East 2017.
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Apache Spark Model Deployment
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Apache Spark(tm) has rapidly become a key tool for data scientists to explore, understand and transform massive datasets and to build and train advanced machine learning models. The question then becomes, how do I deploy these model to a production environment. How do I embed what I have learned into customer facing data applications. Like all things in engineering, it depends.
In this meetup, we will discuss best practices from Databricks on how our customers productionize machine learning models and do a deep dive with actual customer case studies and live demos of a few example architectures and code in Python and Scala. We will also briefly touch on what is coming in Apache Spark 2.X with model serialization and scoring options.
Streaming Analytics for Financial Enterprises
Streaming Analytics for Financial EnterprisesDatabricks Streaming Analytics (or Fast Data processing) is becoming an increasingly popular subject in the financial sector. There are two main reasons for this development. First, more and more data has to be analyze in real-time to prevent fraud; all transactions that are being processed by banks have to pass and ever-growing number of tests to make sure that the money is coming from and going to legitimate sources. Second, customers want to have friction-less mobile experiences while managing their money, such as immediate notifications and personal advise based on their online behavior and other users’ actions.
A typical streaming analytics solution follows a ‘pipes and filters’ pattern that consists of three main steps: detecting patterns on raw event data (Complex Event Processing), evaluating the outcomes with the aid of business rules and machine learning algorithms, and deciding on the next action. At the core of this architecture is the execution of predictive models that operate on enormous amounts of never-ending data streams.
In this talk, I’ll present an architecture for streaming analytics solutions that covers many use cases that follow this pattern: actionable insights, fraud detection, log parsing, traffic analysis, factory data, the IoT, and others. I’ll go through a few architecture challenges that will arise when dealing with streaming data, such as latency issues, event time vs server time, and exactly-once processing. The solution is build on the KISSS stack: Kafka, Ignite, and Spark Structured Streaming. The solution is open source and available on GitHub.
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More and more data is streaming in from many sources in order to drive operations in real-time.
When driving decisions with speed at scale is the norm, the traditional trade-off in analytics between simple but fast and slow but sophisticated has to give way.
Traditionally fast data comes to rest in a database after the simpler in-flight analytics. Only after it is comes to rest can a database perform sophisticated analytics. But in-flight and at rest analytics have to come together in a single, hyper-converged analytic platform.
Real-time data integration to the cloud
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IIoT + Predictive Analytics: Solving for Disruption in Oil & Gas and Energy &...
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In oil and gas, commodity pricing pressures, resulting workforce reductions, and the need to reduce failures, automate workflows, and increase operational efficiencies are driving operators to shift analytics initiatives to advanced data-driven applications to complement physics-based tools.
While sensored equipment and legacy surveillance applications are generating massive amounts of data, just 2% is understood and being leveraged. Operationalizing it along with external datasets enables a shift from time-based to condition-based maintenance, better forecasting and dramatic reductions in unplanned downtime.
The session includes plenty of real-world anecdotes. For example, how an electric power holding company reduced the time it took to investigate energy theft from six months to less than one hour, producing theft leads in minutes and an expected multi-million dollar ROI. How a global offshore contract drilling services provider implemented an open source IIoT solution across its fleet of assets in less than a year, enabling remote monitoring, predictive analytics and maintenance.
Key takeaways:
• How are new processes for data collection, storage and democratization making it accessible and usable at scale?
• Beyond time series data, what other data types are important to assess?
• What advantage are open source technologies providing to enterprises deploying IIoT?
• Why is collaboration important across industrial verticals to increase IIoT open source adoption?
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If you are a data scientist or a platform engineer, you probably can relate to the pains of working with the current explosive growth of Data/ML technologies and toolings. With many overlapping options and steep learning curves for each, it’s increasingly challenging for data science teams. Many platform teams started thinking about building an abstracted ML platform layer to support generalized ML use cases. But there are many complexities involved, especially as the underlying real-time data is shifting into the mainstream.
In this talk, we’ll discuss why ML platforms can benefit from a simple and ""invisible"" abstraction. We’ll offer some evidence on why you should consider leveraging streaming technologies even if your use cases are not real-time yet. We’ll share learnings (combining both ML and Infra perspectives) about some of the hard complexities involved in building such simple abstractions, the design principles behind them, and some counterintuitive decisions you may come across along the way.
By the end of the talk, I hope data scientists can walk away with some tips on how to evaluate ML platforms, and platform engineers learned a few architectural and design tricks.
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To capitalize on real-time customer data, you need a data management infrastructure that allows you to do three things:
1) Sense-Capture event data and stream data from a source, e.g. social media, web logs, machine logs, IoT sensors.
2) Reason-Automatically combine and process this data with existing data for context.
3) Act-Respond appropriately in a reliable, timely, consistent way. In this session we’ll describe and demo an AI powered streaming solution that can tackle the entire end-to-end sense-reason-act process at any latency (real-time, streaming, and batch) using Spark Structured Streaming.
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You will gain a clear understanding of how to use Spark Structured Streaming for data engineering using an intelligent data streaming solution that unifies fast-lane data streaming and batch lane data processing to deliver in-the-moment next best actions that improve customer experience.
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Machine Learning Applied to Real Time Scoring in Manufacturing and Energy Uti...
Machine Learning Applied to Real Time Scoring in Manufacturing and Energy Uti...Kai Wähner Kai Wähner (@KaiWaehner) is a Technology Evangelist and Community Director at TIBCO Software - a leading provider of integration and analytics middleware. Kai is an experience guy in broad variety of topics like Big Data, Advanced Analytics & Machine Learning, he loves to write articles and blog about new technologies and make talks. The talk is about 3 different projects where Kai's team built analytic models with technologies R, Apache Spark or H2O.ai which were deployed to real time processing. The use cases include predictive maintenance in manufacturing but also fraud detection in banking and context-specific pricing in insurance. For one of the cases, Kai gonna show detailed steps will be, how it was built and deployed using supervised/unsupervised ML.
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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!
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Application and Challenges of Streaming Analytics and Machine Learning on Multi-Variate Time Series Data for Smart Manufacturing
- 1. WIFI SSID:Spark+AISummit | Password: UnifiedDataAnalytics
- 2. Pranav Prakash, Quartic.ai Application and challenges of streaming analytics and machine learning on multi-variate time series data for smart manufacturing #UnifiedDataAnalytics #SparkAISummit
- 3. Pranav Prakash • Co-Founder, VP Engineering at Quartic.ai • Ex- LinkedIn SlideShare • Passionate about – A.I., Computer Vision, 3D Printing – Music, Caffeine 3
- 4. What you’ll learn in next 40 mins 4 A cool startup solving some real- life use cases Downtime Reduction use case of a critical asset in Pharma world •And a “secret” to solve such problems Challenges in Industrial Stream Processing Spark specific stuff that we learned
- 5. We enable Industry 4.0 • AI powered smart manufacturing platform • Processing Billions of sensor data every day • Work with top Pharma companies on multiple use cases • Team of 22 techies including Engineers & Data Scientists + 4 Domain Veterans #UnifiedDataAnalytics #SparkAISummit 5
- 6. 6
- 7. We started by building solutions for pharmaceutical manufacturing And created a DIY platform • Increased uptime of sterilization autoclave by 7 days • Increased yield of protein from fermentation process • Incubated egg harvester – increase uptime during critical flu season • Cold-chain monitoring for pharma refrigeration – reduced downtime and waste • Predictive health monitoring of air handlers for clean rooms in pharma • Enable continuous validation of biologic production process • Medical Device Assembly – reduce recalls caused by poor quality.
- 8. Case study – an Intelligent Asset Health Monitoring system for an Industrial Autoclave • Mission - Improve the reliability of a complex asset. • Details - 13 differentmodes (cycles) • Runs 24/7 • CriticalAsset
- 9. Equipment Reliability • Capture process, condition data • Establish baseline and measure deviations • Forecast the future • Classify errors early • “Advisory Mode” AI
- 10. SCADA = Supervisory Control and Data Acquisition PLC = Programable Logic Controller
- 11. System Design Params • Data – Speed: 10ms – 2 hours – Volume: Couple 1,000s sensors per asset. 10,000s of asset per enterprise – Data Type: String, Numeric, Boolean, Array – Timeseries, Discrete
- 12. System Design Params • Deployment – Edge (80%) • Hardware Limit • Many cloud-only solutions won’t work • High Uptime, Low Response Time – Cloud (20%)
- 13. System Design Params • Use Cases – Automatic Model Param Tuning, Model Training – 1000s of ML Models Deployment – Complex Event Processing (CEP) – Statistical & Analytical Processing • Rule Recommendation • Near Real Time Stream Processing
- 14. Challenges • ML – Multiple granularities – Late Data Arrival – Model Deployment on a heterogenous data stream – Flash Flood of Data
- 15. Multiple Granularities 15 TS Sensor A Sensor B 12:03:01.198 12:03:02.283 12:03:03.316 12:03:04.572 12:03:05.283 12:03:06.342 TS Sensor C Sensor D 12:03:01.230 12:03:06.233 12:03:11.316 12:03:16.520 12:03:21.283 - Both belong to same “Asset” - Target Feature – C/D or A/B Poll Frequency = 1s Poll Frequency = 5s
- 16. Multiple Granularities • Approximation (Roundoff) • Aggregation • Filling - Forward or Backward or Average
- 18. Late Data Arrival • Watermarking – Homogenous stream: One watermark per Stream – Heterogenous stream: multiple watermark per “Usage Condition”
- 19. - Watermarking time automatically and dynamically chosen - Data later than threshold is discarded
- 21. Model Deployment
- 22. Flash Flood of Data • Backpressure enabled • Allows Ingestion rate to be chosen dynamically and automatically • PID Controller 22
- 23. Complex Event Processing • Insights – PySpark + yahoo/graphkit • Rules – Scala Spark + drools
- 24. Summing it up • Industrial IoT is different • Context = Process Data + Condition Data • Techniques for processing heterogenous stream
- 26. DON’T FORGET TO RATE AND REVIEW THE SESSIONS SEARCH SPARK + AI SUMMIT