Hi I am starting to play with Apache Spark using groovy. I have a small script <https://gist.github.com/galleon/d6540327c418aa8a479f> that I use for that purpose.
When the script is transformed in a class and launched with java, this is working fine but it fails when run as a script. Any idea what I am doing wrong ? May be some of you have already come accros that problem. $ groovy -version Groovy Version: 2.4.3 JVM: 1.8.0_40 Vendor: Oracle Corporation OS: Mac OS X $ groovy GroovySparkWordcount.groovy class org.apache.spark.api.java.JavaRDD true true Caught: org.apache.spark.SparkException: Task not serializable org.apache.spark.SparkException: Task not serializable at org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:315) at org.apache.spark.util.ClosureCleaner$.org$apache$spark$util$ClosureCleaner$$clean(ClosureCleaner.scala:305) at org.apache.spark.util.ClosureCleaner$.clean(ClosureCleaner.scala:132) at org.apache.spark.SparkContext.clean(SparkContext.scala:1893) at org.apache.spark.rdd.RDD$$anonfun$filter$1.apply(RDD.scala:311) at org.apache.spark.rdd.RDD$$anonfun$filter$1.apply(RDD.scala:310) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:147) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:108) at org.apache.spark.rdd.RDD.withScope(RDD.scala:286) at org.apache.spark.rdd.RDD.filter(RDD.scala:310) at org.apache.spark.api.java.JavaRDD.filter(JavaRDD.scala:78) at org.apache.spark.api.java.JavaRDD$filter$0.call(Unknown Source) at GroovySparkWordcount.run(GroovySparkWordcount.groovy:27) Caused by: java.io.NotSerializableException: GroovySparkWordcount Serialization stack: - object not serializable (class: GroovySparkWordcount, value: GroovySparkWordcount@57c6feea) - field (class: GroovySparkWordcount$1, name: this$0, type: class GroovySparkWordcount) - object (class GroovySparkWordcount$1, GroovySparkWordcount$1@3db1ce78) - field (class: org.apache.spark.api.java.JavaRDD$$anonfun$filter$1, name: f$1, type: interface org.apache.spark.api.java.function.Function) - object (class org.apache.spark.api.java.JavaRDD$$anonfun$filter$1, <function1>) at org.apache.spark.serializer.SerializationDebugger$.improveException(SerializationDebugger.scala:40) at org.apache.spark.serializer.JavaSerializationStream.writeObject(JavaSerializer.scala:47) at org.apache.spark.serializer.JavaSerializerInstance.serialize(JavaSerializer.scala:81) at org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:312) ... 12 more
