[jira] [Commented] (BEAM-10881) Spark-runner KafkaIO beam throws ConcurrentModification after running 2 hours

["Kenneth Knowles (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-10881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17301880#comment-17301880 ] 

Kenneth Knowles commented on BEAM-10881:
----------------------------------------

This is probably very hard for us to reproduce, so unlikely that we can find out what the problem is. It could be Beam, it could be Spark, etc.

Can you determine if it is still a problem in 2.28.0? Does it reproduce reliably if you just run the pipeline for a long time?

> Spark-runner KafkaIO beam throws ConcurrentModification after running 2 hours
> -----------------------------------------------------------------------------
>
>                 Key: BEAM-10881
>                 URL: https://issues.apache.org/jira/browse/BEAM-10881
>             Project: Beam
>          Issue Type: Bug
>          Components: io-java-kafka, runner-spark
>    Affects Versions: 2.23.0
>            Reporter: yws
>            Priority: P2
>              Labels: beam, kafkaio, spark-runner
>
> *mycode:*
> Read<byte[], byte[]> kafkaRead = KafkaIO.<byte[], byte[]> read()
>  .withBootstrapServers(brokers)
>  .withConsumerConfigUpdates(properties)
>  .withProcessingTime().withTopic(topic)
>  .withKeyDeserializer(ByteArrayDeserializer.class)
>  .withValueDeserializer(ByteArrayDeserializer.class);
>  
> mybeam sdk version is 2.23.0  
>  
> *after running in spark-runner about 2hours it thows ConcurrentModificationException: stacktrace is as follows*
>  
> java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) at java.util.ArrayList$Itr.next(ArrayList.java:851) at org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Iterators$2.next(Iterators.java:418) at org.apache.beam.sdk.io.kafka.KafkaUnboundedReader.advance(KafkaUnboundedReader.java:150) at org.apache.beam.runners.spark.io.MicrobatchSource$Reader.advanceWithBackoff(MicrobatchSource.java:245) at org.apache.beam.runners.spark.io.MicrobatchSource$Reader.advance(MicrobatchSource.java:232) at org.apache.beam.runners.spark.stateful.StateSpecFunctions$1.apply(StateSpecFunctions.java:177) at org.apache.beam.runners.spark.stateful.StateSpecFunctions$1.apply(StateSpecFunctions.java:107) at org.apache.spark.streaming.StateSpec$$anonfun$1.apply(StateSpec.scala:181) at org.apache.spark.streaming.StateSpec$$anonfun$1.apply(StateSpec.scala:180) at org.apache.spark.streaming.rdd.MapWithStateRDDRecord$$anonfun$updateRecordWithData$1.apply(MapWithStateRDD.scala:57) at org.apache.spark.streaming.rdd.MapWithStateRDDRecord$$anonfun$updateRecordWithData$1.apply(MapWithStateRDD.scala:55) at scala.collection.Iterator$class.foreach(Iterator.scala:891) at scala.collection.AbstractIterator.foreach(Iterator.scala:1334) at org.apache.spark.streaming.rdd.MapWithStateRDDRecord$.updateRecordWithData(MapWithStateRDD.scala:55) at org.apache.spark.streaming.rdd.MapWithStateRDD.compute(MapWithStateRDD.scala:159) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD$$anonfun$7.apply(RDD.scala:337) at org.apache.spark.rdd.RDD$$anonfun$7.apply(RDD.scala:335) at org.apache.spark.storage.BlockManager$$anonfun$doPutIterator$1.apply(BlockManager.scala:1172) at org.apache.spark.storage.BlockManager$$anonfun$doPutIterator$1.apply(BlockManager.scala:1163) at org.apache.spark.storage.BlockManager.doPut(BlockManager.scala:1098) at org.apache.spark.storage.BlockManager.doPutIterator(BlockManager.scala:1163) at org.apache.spark.storage.BlockManager.getOrElseUpdate(BlockManager.scala:889) at org.apache.spark.rdd.RDD.getOrCompute(RDD.scala:335) at org.apache.spark.rdd.RDD.iterator(RDD.scala:286) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.UnionRDD.compute(UnionRDD.scala:105) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90) at org.apache.spark.scheduler.Task.run(Task.scala:121) at org.apache.spark.executor.Executor$TaskRunner$$anonfun$11.apply(Executor.scala:442) at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1386) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:448) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)



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