Could you attach the executor log? That may help identify the root
cause. -Xiangrui
On Mon, Jan 5, 2015 at 11:12 PM, Priya Ch <learnings.chitt...@gmail.com> wrote:
> Hi All,
>
> Word2Vec and TF-IDF algorithms in spark mllib-1.1.0 are working only in
> local mode and not on distributed mode. Null pointer exception has been
> thrown. Is this a bug in spark-1.1.0 ?
>
> Following is the code:
> def main(args:Array[String])
> {
> val conf=new SparkConf
> val sc=new SparkContext(conf)
> val
> documents=sc.textFile("hdfs://IMPETUS-DSRV02:9000/nlp/sampletext").map(_.split("
> ").toSeq)
> val hashingTF = new HashingTF()
> val tf= hashingTF.transform(documents)
> tf.cache()
> val idf = new IDF().fit(tf)
> val tfidf = idf.transform(tf)
> val rdd=tfidf.map { vec => println("vector is...."+vec)
> (10)
> }
> rdd.saveAsTextFile("/home/padma/usecase")
>
> }
>
>
>
>
> Exception thrown:
>
> 15/01/06 12:36:09 INFO scheduler.TaskSchedulerImpl: Adding task set 0.0 with
> 2 tasks
> 15/01/06 12:36:10 INFO cluster.SparkDeploySchedulerBackend: Registered
> executor:
> Actor[akka.tcp://sparkexecu...@impetus-dsrv05.impetus.co.in:33898/user/Executor#-1525890167]
> with ID 0
> 15/01/06 12:36:10 INFO scheduler.TaskSetManager: Starting task 0.0 in stage
> 0.0 (TID 0, IMPETUS-DSRV05.impetus.co.in, NODE_LOCAL, 1408 bytes)
> 15/01/06 12:36:10 INFO scheduler.TaskSetManager: Starting task 1.0 in stage
> 0.0 (TID 1, IMPETUS-DSRV05.impetus.co.in, NODE_LOCAL, 1408 bytes)
> 15/01/06 12:36:10 INFO storage.BlockManagerMasterActor: Registering block
> manager IMPETUS-DSRV05.impetus.co.in:35130 with 2.1 GB RAM
> 15/01/06 12:36:12 INFO network.ConnectionManager: Accepted connection from
> [IMPETUS-DSRV05.impetus.co.in/192.168.145.195:46888]
> 15/01/06 12:36:12 INFO network.SendingConnection: Initiating connection to
> [IMPETUS-DSRV05.impetus.co.in/192.168.145.195:35130]
> 15/01/06 12:36:12 INFO network.SendingConnection: Connected to
> [IMPETUS-DSRV05.impetus.co.in/192.168.145.195:35130], 1 messages pending
> 15/01/06 12:36:12 INFO storage.BlockManagerInfo: Added broadcast_1_piece0 in
> memory on IMPETUS-DSRV05.impetus.co.in:35130 (size: 2.1 KB, free: 2.1 GB)
> 15/01/06 12:36:12 INFO storage.BlockManagerInfo: Added broadcast_0_piece0 in
> memory on IMPETUS-DSRV05.impetus.co.in:35130 (size: 10.1 KB, free: 2.1 GB)
> 15/01/06 12:36:13 INFO storage.BlockManagerInfo: Added rdd_3_1 in memory on
> IMPETUS-DSRV05.impetus.co.in:35130 (size: 280.0 B, free: 2.1 GB)
> 15/01/06 12:36:13 INFO storage.BlockManagerInfo: Added rdd_3_0 in memory on
> IMPETUS-DSRV05.impetus.co.in:35130 (size: 416.0 B, free: 2.1 GB)
> 15/01/06 12:36:13 WARN scheduler.TaskSetManager: Lost task 1.0 in stage 0.0
> (TID 1, IMPETUS-DSRV05.impetus.co.in): java.lang.NullPointerException:
> org.apache.spark.rdd.RDD$$anonfun$13.apply(RDD.scala:596)
> org.apache.spark.rdd.RDD$$anonfun$13.apply(RDD.scala:596)
>
> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35)
> org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:262)
> org.apache.spark.rdd.RDD.iterator(RDD.scala:229)
> org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:62)
> org.apache.spark.scheduler.Task.run(Task.scala:54)
>
> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:177)
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> java.lang.Thread.run(Thread.java:722)
>
>
> Thanks,
> Padma Ch
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