Yes it seems it was not taking the classpath for the Cassandra connector. Added it to driver class path argument but got into another error
Used below command now spark-submit --class ldCassandraTable ./target/scala-2.10/merlin-spark-cassandra-poc_2.10-0.0.1.jar "/home/analytics/Documents/test_wfctotal.dat" test_wfctotal --driver-class-path /home/analytics/Installers/spark-cassandra-connector-1.1.1/spark-cassandra-connector/target/scala-2.10/spark-cassandra-connector-assembly-1.1.1.jar and getting new error Spark assembly has been built with Hive, including Datanucleus jars on classpath 15/04/03 13:46:44 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable :/home/analytics/Installers/spark-cassandra-connector-1.1.1/spark-cassandra-connector/target/scala-2.10/spark-cassandra-connector-assembly-1.1.1.jar:/home/analytics/Installers/spark-1.1.1/conf:/home/analytics/Installers/spark-1.1.1/assembly/target/scala-2.10/spark-assembly-1.1.1-hadoop1.0.4.jar:/home/analytics/Installers/spark-1.1.1/lib_managed/jars/datanucleus-rdbms-3.2.1.jar:/home/analytics/Installers/spark-1.1.1/lib_managed/jars/datanucleus-core-3.2.2.jar:/home/analytics/Installers/spark-1.1.1/lib_managed/jars/datanucleus-api-jdo-3.2.1.jar 15/04/03 13:46:46 WARN LoadSnappy: Snappy native library not loaded Records Loaded to 15/04/03 13:46:54 ERROR ConnectionManager: Corresponding SendingConnection to ConnectionManagerId(NODE02.int.kronos.com,60755) not found From: Dave Brosius [mailto:dbros...@mebigfatguy.com] Sent: Friday, April 03, 2015 9:15 AM To: user@cassandra.apache.org Subject: Re: Getting NoClassDefFoundError for com/datastax/spark/connector/mapper/ColumnMapper This is what i meant by 'initial cause' Caused by: java.lang.ClassNotFoundException: com.datastax.spark.connector.mapper.ColumnMapper So it is in fact a classpath problem Here is the class in question https://github.com/datastax/spark-cassandra-connector/blob/master/spark-cassandra-connector/src/main/scala/com/datastax/spark/connector/mapper/ColumnMapper.scala Maybe it would be worthwhile to put this at the top of your main method System.out.println(System.getProperty( "java.class.path"); and show what that prints. What version of the cassandra and what version of the cassandra-spark connector are you using, btw? On 04/02/2015 11:16 PM, Tiwari, Tarun wrote: Sorry I was unable to reply for couple of days. I checked the error again and can’t see any other initial cause. Here is the full error that is coming. Exception in thread "main" java.lang.NoClassDefFoundError: com/datastax/spark/connector/mapper/ColumnMapper at ldCassandraTable.main(ld_Cassandra_tbl_Job.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:329) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:75) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) Caused by: java.lang.ClassNotFoundException: com.datastax.spark.connector.mapper.ColumnMapper at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) From: Dave Brosius [mailto:dbros...@mebigfatguy.com] Sent: Tuesday, March 31, 2015 8:46 PM To: user@cassandra.apache.org<mailto:user@cassandra.apache.org> Subject: Re: Getting NoClassDefFoundError for com/datastax/spark/connector/mapper/ColumnMapper Is there an 'initial cause' listed under that exception you gave? As NoClassDefFoundError is not exactly the same as ClassNotFoundException. It meant that ColumnMapper couldn't initialize it's static initializer, it could be because some other class couldn't be found, or it could be some other non classloader related error. On 2015-03-31 10:42, Tiwari, Tarun wrote: Hi Experts, I am getting java.lang.NoClassDefFoundError: com/datastax/spark/connector/mapper/ColumnMapper while running a app to load data to Cassandra table using the datastax spark connector Is there something else I need to import in the program or dependencies? RUNTIME ERROR: Exception in thread "main" java.lang.NoClassDefFoundError: com/datastax/spark/connector/mapper/ColumnMapper at ldCassandraTable.main(ld_Cassandra_tbl_Job.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) Below is my scala program /*** ld_Cassandra_Table.scala ***/ import org.apache.spark.SparkContext import org.apache.spark.SparkContext._ import org.apache.spark.SparkConf import com.datastax.spark.connector import com.datastax.spark.connector._ object ldCassandraTable { def main(args: Array[String]) { val fileName = args(0) val tblName = args(1) val conf = new SparkConf(true).set("spark.cassandra.connection.host", "<MASTER HOST>") .setMaster("<MASTER URL>") .setAppName("LoadCassandraTableApp") val sc = new SparkContext(conf) sc.addJar("/home/analytics/Installers/spark-cassandra-connector-1.1.1/spark-cassandra-connector/target/scala-2.10/spark-cassandra-connector-assembly-1.1.1.jar") val normalfill = sc.textFile(fileName).map(line => line.split('|')) normalfill.map(line => (line(0), line(1), line(2), line(3), line(4), line(5), line(6), line(7), line(8), line(9), line(10), line(11), line(12), line(13), line(14), line(15), line(16), line(17), line(18), line(19), line(20), line(21))).saveToCassandra(keyspace, tblName, SomeColumns("wfctotalid", "timesheetitemid", "employeeid", "durationsecsqty", "wageamt", "moneyamt", "applydtm", "laboracctid", "paycodeid", "startdtm", "stimezoneid", "adjstartdtm", "adjapplydtm", "enddtm", "homeaccountsw", "notpaidsw", "wfcjoborgid", "unapprovedsw", "durationdaysqty", "updatedtm", "totaledversion", "acctapprovalnum")) println("Records Loaded to ".format(tblName)) Thread.sleep(500) sc.stop() } } Below is the sbt file: name:= “POC” version := "0.0.1" scalaVersion := "2.10.4" // additional libraries libraryDependencies ++= Seq( "org.apache.spark" %% "spark-core" % "1.1.1" % "provided", "org.apache.spark" %% "spark-sql" % "1.1.1" % "provided", "com.datastax.spark" %% "spark-cassandra-connector" % "1.1.1" % "provided" ) Regards, Tarun Tiwari | Workforce Analytics-ETL | Kronos India M: +91 9540 28 27 77 | Tel: +91 120 4015200 Kronos | Time & Attendance • Scheduling • Absence Management • HR & Payroll • Hiring • Labor Analytics Join Kronos on: kronos.com<http://www.kronos.com/> | Facebook<http://www.kronos.com/facebook>|Twitter<http://www.kronos.com/twitter>|LinkedIn<http://www.kronos.com/linkedin> |YouTube<http://www.kronos.com/youtube>
