At the time of writing, the following versions were used: Cassandra 3.10 Scala 2.11.8 Spark 2.1. install java sudo apt-get update -y sudo apt-get install software-properties-common -y sudo add-apt-repository -y ppa:openjdk-r/ppa sudo apt-get. Prerequisite: Cassandra DB running locally with desired tables. This article will walk you through various fundamental operations you can do with spark on cassandra db.
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It took me a while to figure out how to get this setup. This article is targeted for audience who have cassandra as their big data store and which do analytics and processing on top of it. There is a good version compatibility matrix on the GitHub wiki of the Spark-Cassandra connector. Use this script to get Spark 2.0 to work with Cassandra. The Past: Hadoop and C 3 You Hadoop integration with C required a bit of knowledge and was generally not very easy. Spark Cassandra Connector Past, Present and Future Brian Hess Sr. Spark Cassandra Connector: Past, Present and Future 2. Spark-cassandra jar: spark-cassandra-connector-1.6.4-s_2.10.jarġ7/01/18 10:15:56 ERROR Executor: Exception in task 1.0 in stage 4.0 (TID 8)Īt .OutputMetricsUpdater$TaskMetricsSupport$class.$init$(OutputMetricsUpdater.scala:107)Īt .OutputMetricsUpdater$TaskMetricsUpdater.(OutputMetricsUpdater.scala:151)Īt .OutputMetricsUpdater$.apply(OutputMetricsUpdater.scala:75)Īt .(TableWriter.scala:175)Īt .(TableWriter.scala:163)Īt .(TableWriter.scala:150)Īt .RDDFunctions$$anonfun$saveToCassandra$1.apply(RDDFunctions.scala:36)Īt .nTask(ResultTask.scala:66)Īt .n(Task.scala:89)Īt .Executor$n(Executor.scala:214)Īt .runWorker(ThreadPoolExecutor.java:1142)Īt $n(ThreadPoolExecutor.java:617)Ĭaused by: : Īt (URLClassLoader.java:381)Īt (ClassLoader.java:424)Īt (ClassLoader.java:357)ġ7/01/18 10:15:56 ERROR Executor: Exception in task 3.0 in stage 4.0 (TID 10)ġ7/01/18 10:15:56 ERROR Executor: Exception in task 2.0 in stage 4.0 (TID 9)ġ7/01/18 10:15:56 ERROR Executor: Exception in task 0.0 in stage 4.0 (TID 7)ġ7/01/18 10:15:56 ERROR SparkUncaughtExceptionHandler: Uncaught exception in thread ThreadĪt .(TableWriter. Apache Spark The Spark-Cassandra connector Be careful about the various versions of frameworks and libraries. Spark Cassandra Connector: Past, Present and Furure 1. Request you to help us to resolve the issue.
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options(table="my_table", keyspace="test")\ Lets execute the script spark-submit packages datastax:spark-cassandra-connector:2.0.0-M2-s2.11 SparkCassandraIntegration.py conf 127.0.0.1 Lets verify if data was written to the table, login back to cqlsh and use movie lens Keyspace and do a select. I am getting the following error while using spark-cassandra connector in pyspark,Ĭqlsh> CREATE KEYSPACE test WITH replication = ])ĭf = sqlContext.createDataFrame(my_table_RDD)
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