Writing Apache Spark and Apache Flink Applications Using Apache Bahir
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The document discusses the Apache Bahir project, established as a top-level Apache project for building applications using extensions to Apache Spark. It includes details about the project origins, benefits of using Apache Bahir, its relationship with Apache Spark, and various extension capabilities such as MQTT and Twitter data streaming. Additionally, it covers integration steps for using Bahir extensions in applications and showcases a demonstration environment for IoT simulations.
![IBM SparkTechnology Center
Apache Spark – Spark SQL
You can run SQL statement with SparkSession.sql(…) interface:
val spark = SparkSession.builder()
.appName(“Demo”)
.getOrCreate()
spark.sql(“create table T1 (c1 int, c2 int) stored as parquet”)
val ds = spark.sql(“select * from T1”)
You can further transform the resultant dataset:
val ds1 = ds.groupBy(“c1”).agg(“c2”-> “sum”)
val ds2 = ds.orderBy(“c1”)
The result is a DataFrame / Dataset[Row]
ds.show() displays the rows
10](https://image.slidesharecdn.com/apachebigdata-apachebahir-161116210757/85/Writing-Apache-Spark-and-Apache-Flink-Applications-Using-Apache-Bahir-10-320.jpg)
![IBM SparkTechnology Center
Apache Spark – Spark SQL
You can read from data sources using SparkSession.read.format(…)
val spark = SparkSession.builder()
.appName(“Demo”)
.getOrCreate()
case class Bank(age: Integer, job: String, marital: String, education: String, balance: Integer)
// loading csv data to a Dataset of Bank type
val bankFromCSV = spark.read.csv(“hdfs://localhost:9000/data/bank.csv").as[Bank]
// loading JSON data to a Dataset of Bank type
val bankFromJSON = spark.read.json(“hdfs://localhost:9000/data/bank.json").as[Bank]
// select a column value from the Dataset
bankFromCSV.select(‘age).show() will return all rows of column “age” from this dataset.
11](https://image.slidesharecdn.com/apachebigdata-apachebahir-161116210757/85/Writing-Apache-Spark-and-Apache-Flink-Applications-Using-Apache-Bahir-11-320.jpg)
![IBM SparkTechnology Center
Apache Spark – Spark SQL
You can also configure a specific data source with specific options
val spark = SparkSession.builder()
.appName(“Demo”)
.getOrCreate()
case class Bank(age: Integer, job: String, marital: String, education: String, balance: Integer)
// loading csv data to a Dataset of Bank type
val bankFromCSV = sparkSession.read
.option("header", ”true") // Use first line of all files as header
.option("inferSchema", ”true") // Automatically infer data types
.option("delimiter", " ")
.csv("/users/lresende/data.csv”)
.as[Bank]
bankFromCSV.select(‘age).show() // will return all rows of column “age” from this dataset.
12](https://image.slidesharecdn.com/apachebigdata-apachebahir-161116210757/85/Writing-Apache-Spark-and-Apache-Flink-Applications-Using-Apache-Bahir-12-320.jpg)
Writing Apache Spark and Apache Flink Applications Using Apache Bahir
- 1. IBM SparkTechnology Center Apache Big Data Seville 2016 Apache Bahir Writing Applications using Apache Bahir Luciano Resende IBM | Spark Technology Center
- 2. IBM SparkTechnology Center About Me Luciano Resende ([email protected]) • Architect and community liaison at IBM – Spark Technology Center • Have been contributing to open source at ASF for over 10 years • Currently contributing to : Apache Bahir, Apache Spark, Apache Zeppelin and Apache SystemML (incubating) projects 2 @lresende1975 http://lresende.blogspot.com/ https://www.linkedin.com/in/lresendehttp://slideshare.net/luckbr1975lresende
- 3. IBM SparkTechnology Center Origins of the Apache Bahir Project MAY/2016: Established as a top-level Apache Project. • PMC formed by Apache Spark committers/pmc, Apache Members • Initial contributions imported from Apache Spark AUG/2016: Flink community join Apache Bahir • Initial contributions of Flink extensions • In October 2016 Robert Metzger elected committer
- 4. IBM SparkTechnology Center The Apache Bahir name Naming an Apache Project is a science !!! • We needed a name that wasn’t used yet • Needed to be related to Spark We ended up with : Bahir • A name of Arabian origin that means Sparkling, • Also associated with a guy who succeeds at everything 4
- 5. IBM SparkTechnology Center Why Apache Bahir It’s an Apache project • And if you are here, you know what it means What are the benefits of curating your extensions at Apache Bahir • Apache Governance • Apache License • Apache Community • Apache Brand 5
- 6. IBM SparkTechnology Center Why Apache Bahir Flexibility • Release flexibility • Bounded to platform or component release Shared infrastructure • Release, CI, etc Shared knowledge • Collaborate with experts on both platform and component areas 6
- 7. IBM SparkTechnology Center Apache Spark 7
- 8. IBM SparkTechnology Center Apache Spark - Introduction What is Apache Spark ? 8 Spark Core Spark SQL Spark Streaming Spark ML Spark GraphX executes SQL statements performs streaming analytics using micro-batches common machine learning and statistical algorithms distributed graph processing framework general compute engine, handles distributed task dispatching, scheduling and basic I/O functions large variety of data sources and formats can be supported, both on- premise or cloud BigInsights (HDFS) Cloudant dashDB SQL DB
- 9. IBM SparkTechnology Center Apache Spark – Spark SQL 9 Spark Core Spark SQL Spark Streaming Spark ML Spark GraphX ▪Unified data access: Query structured data sets with SQL or Dataset/DataFrame APIs ▪Fast, familiar query language across all of your enterprise dataRDBMS Data Sources Structured Streaming Data Sources
- 10. IBM SparkTechnology Center Apache Spark – Spark SQL You can run SQL statement with SparkSession.sql(…) interface: val spark = SparkSession.builder() .appName(“Demo”) .getOrCreate() spark.sql(“create table T1 (c1 int, c2 int) stored as parquet”) val ds = spark.sql(“select * from T1”) You can further transform the resultant dataset: val ds1 = ds.groupBy(“c1”).agg(“c2”-> “sum”) val ds2 = ds.orderBy(“c1”) The result is a DataFrame / Dataset[Row] ds.show() displays the rows 10
- 11. IBM SparkTechnology Center Apache Spark – Spark SQL You can read from data sources using SparkSession.read.format(…) val spark = SparkSession.builder() .appName(“Demo”) .getOrCreate() case class Bank(age: Integer, job: String, marital: String, education: String, balance: Integer) // loading csv data to a Dataset of Bank type val bankFromCSV = spark.read.csv(“hdfs://localhost:9000/data/bank.csv").as[Bank] // loading JSON data to a Dataset of Bank type val bankFromJSON = spark.read.json(“hdfs://localhost:9000/data/bank.json").as[Bank] // select a column value from the Dataset bankFromCSV.select(‘age).show() will return all rows of column “age” from this dataset. 11
- 12. IBM SparkTechnology Center Apache Spark – Spark SQL You can also configure a specific data source with specific options val spark = SparkSession.builder() .appName(“Demo”) .getOrCreate() case class Bank(age: Integer, job: String, marital: String, education: String, balance: Integer) // loading csv data to a Dataset of Bank type val bankFromCSV = sparkSession.read .option("header", ”true") // Use first line of all files as header .option("inferSchema", ”true") // Automatically infer data types .option("delimiter", " ") .csv("/users/lresende/data.csv”) .as[Bank] bankFromCSV.select(‘age).show() // will return all rows of column “age” from this dataset. 12
- 13. IBM SparkTechnology Center Apache Spark – Spark SQL Data Sources under the covers • Data source registration (e.g. spark.read.datasource) • Provide BaseRelation implementation • That implements support for table scans: • TableScans, PrunedScan, PrunedFilteredScan, CatalystScan • Detailed information available at • http://www.spark.tc/exploring-the-apache-spark-datasource-api/ 13
- 14. IBM SparkTechnology Center Apache Spark – Spark SQL Structured Streaming Unified programming model for streaming, interactive and batch queries 14 Image source: https://spark.apache.org/docs/latest/structured-streaming-programming-guide.html Considers the data stream as unbounded table
- 15. IBM SparkTechnology Center Apache Spark – Spark SQL Structured Streaming SQL regular APIs val spark = SparkSession.builder() .appName(“Demo”) .getOrCreate() val input = spark.read .schema(schema) .format(”csv") .load(”input-path") val result = input .select(”age”) .where(”age > 18”) result.write .format(”json”) . save(” dest-path”) 15 Structured Streaming APIs val spark = SparkSession.builder() .appName(“Demo”) .getOrCreate() val input = spark.readStream .schema(schema) .format(”csv") .load(”input-path") val result = input .select(”age”) .where(”age > 18”) result.write .format(”json”) . startStream(” dest-path”)
- 16. IBM SparkTechnology Center Apache Spark – Spark SQL Structured Streaming 16 Structured Streaming is an ALPHA feature
- 17. IBM SparkTechnology Center Apache Spark – Spark Streaming 17 Spark Core Spark Streaming Spark SQL Spark ML Spark GraphX ▪Micro-batch event processing for near- real time analytics ▪e.g. Internet of Things (IoT) devices, Twitter feeds, Kafka (event hub), etc. ▪No multi-threading or parallel process programming required
- 18. IBM SparkTechnology Center Apache Spark – Spark Streaming Also known as discretized stream or Dstream Abstracts a continuous stream of data Based on micro-batching 18
- 19. IBM SparkTechnology Center Apache Spark – Spark Streaming val sparkConf = new SparkConf() .setAppName("MQTTWordCount") val ssc = new StreamingContext(sparkConf, Seconds(2)) val lines = MQTTUtils.createStream(ssc, brokerUrl, topic, StorageLevel.MEMORY_ONLY_SER_2) val words = lines.flatMap(x => x.split(" ")) val wordCounts = words.map(x => (x, 1)).reduceByKey(_ + _) wordCounts.print() ssc.start() ssc.awaitTermination() 19
- 20. IBM SparkTechnology Center Apache Spark extensions in Bahir MQTT – Enables reading data from MQTT Servers using Spark Streaming or Structured streaming. • http://bahir.apache.org/docs/spark/current/spark-sql-streaming-mqtt/ • http://bahir.apache.org/docs/spark/current/spark-streaming-mqtt/ Twitter – Enables reading social data from twitter using Spark Streaming. • http://bahir.apache.org/docs/spark/current/spark-streaming-twitter/ Akka – Enables reading data from Akka Actors using Spark Streaming. • http://bahir.apache.org/docs/spark/current/spark-streaming-akka/ ZeroMQ – Enables reading data from ZeroMQ using Spark Streaming. • http://bahir.apache.org/docs/spark/current/spark-streaming-zeromq/ 20
- 21. IBM SparkTechnology Center Apache Spark extensions coming soon to Bahir WebHDFS – Enables reading data from remote HDFS file system utilizing Spark SQL APIs • https://issues.apache.org/jira/browse/BAHIR-67 CounchDB / Cloudant– Enables reading data from CounchDB NoSQL document stores using Spark SQL APIs 21
- 22. IBM SparkTechnology Center Apache Spark extensions in Bahir Adding Bahir extensions into your application • Using SBT • libraryDependencies += "org.apache.bahir" %% "spark-streaming-mqtt" % "2.1.0-SNAPSHOT” • Using Maven • <dependency> <groupId>org.apache.bahir</groupId> <artifactId>spark-streaming-mqtt_2.11 </artifactId> <version>2.1.0-SNAPSHOT</version> </dependency> 22
- 23. IBM SparkTechnology Center Apache Spark extensions in Bahir Submitting applications with Bahir extensions to Spark • Spark-shell • bin/spark-shell --packages org.apache.bahir:spark-streaming_mqtt_2.11:2.1.0-SNAPSHOT ….. • Spark-submit • bin/spark-submit --packages org.apache.bahir:spark-streaming_mqtt_2.11:2.1.0-SNAPSHOT ….. 23
- 24. IBM SparkTechnology Center Apache Flink 24
- 25. IBM SparkTechnology Center Apache Flink extensions in Bahir Flink platform extensions added recently • https://github.com/apache/bahir-flink First release coming soon • Release discussions have started • Finishing up some basic documentation and examples • Should be available soon 25
- 26. IBM SparkTechnology Center Apache Flink extensions in Bahir ActiveMQ – Enables reading and publishing data from ActiveMQ servers • https://github.com/apache/bahir-flink/blob/master/flink-connector-activemq/README.md Flume– Enables publishing data to Apache Flume • https://github.com/apache/bahir-flink/tree/master/flink-connector-flume Redis – Enables reading data to Redis and publishing data to Redis PubSub • https://github.com/apache/bahir-flink/blob/master/flink-connector-redis/README.md 26
- 27. IBM SparkTechnology Center Live Demo 27
- 28. IBM SparkTechnology Center IoT Simulation using MQTT The demo environment https://github.com/lresende/bahir-iot-demo 28 Docker environment Mosquitto MQTT Server Node.js Webapplication Simulates Elevator IoT devices Elevator simulator Metrics: - Weight - Speed - Power - Temperature - System
- 29. IBM SparkTechnology Center Join the Apache Bahir community !!! 29
- 30. IBM SparkTechnology Center References Apache Bahir http://bahir.apache.org Documentation for Apache Spark extensions http://bahir.apache.org/docs/spark/current/documentation/ Source Repositories https://github.com/apache/bahir https://github.com/apache/bahir-flink https://github.com/apache/bahir-website 30 Image source: http://az616578.vo.msecnd.net/files/2016/03/21/6359412499310138501557867529_thank-you-1400x800-c-default.gif