Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Cannot Reproduce
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      Saving here for now, in case someone seems something similar or has a sudden insight.
      On parallel query workload, at some point, one query became stuck while everything else finished. The query ended with 3 reducer stages, 1 vertex each. The only things running were Reducer 3 and Reducer 2 (10-machine cluster), 3 waiting for 2, and 2 stuck for 20 minutes.
      Unfortunately log level was WARN so there's not much in terms of logs.
      When LLAP cluster was stopped, the thread running reducer 2 died like so:

      2015-07-14 19:02:20,136 [TezTaskRunner_attempt_1435700346116_1889_1_06_000000_104(attempt_1435700346116_1889_1_06_000000_104)] ERROR org.apache.hadoop.hive.ql.exec.MapJoinOperator: Unexpected exception from MapJoinOperator : java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@580b9a95 rejected from java.util.concurrent.ThreadPoolExecutor@61d1d95b[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 753]
      org.apache.hadoop.hive.ql.metadata.HiveException: java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@580b9a95 rejected from java.util.concurrent.ThreadPoolExecutor@61d1d95b[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 753]
         at org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.process(ReduceSinkOperator.java:402)
         at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:872)
         at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.internalForward(CommonJoinOperator.java:643)
         at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.genUniqueJoinObject(CommonJoinOperator.java:656)
         at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.genUniqueJoinObject(CommonJoinOperator.java:659)
         at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.checkAndGenObject(CommonJoinOperator.java:755)
         at org.apache.hadoop.hive.ql.exec.MapJoinOperator.process(MapJoinOperator.java:415)
         at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:872)
         at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.internalForward(CommonJoinOperator.java:643)
         at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.genUniqueJoinObject(CommonJoinOperator.java:656)
         at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.genUniqueJoinObject(CommonJoinOperator.java:659)
         at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.checkAndGenObject(CommonJoinOperator.java:755)
         at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.joinObject(CommonMergeJoinOperator.java:309)
         at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.joinOneGroup(CommonMergeJoinOperator.java:272)
         at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.joinOneGroup(CommonMergeJoinOperator.java:265)
         at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.joinFinalLeftData(CommonMergeJoinOperator.java:462)
         at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.closeOp(CommonMergeJoinOperator.java:383)
         at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:651)
         at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.close(ReduceRecordProcessor.java:317)
         at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:172)
         at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:146)
         at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:349)
         at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:71)
         at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:60)
         at java.security.AccessController.doPrivileged(Native Method)
         at javax.security.auth.Subject.doAs(Subject.java:415)
         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1654)
         at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:60)
         at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:35)
         at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
         at java.util.concurrent.FutureTask.run(FutureTask.java:262)
         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
         at java.lang.Thread.run(Thread.java:745)
      Caused by: java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@580b9a95 rejected from java.util.concurrent.ThreadPoolExecutor@61d1d95b[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 753]
         at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2048)
         at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)
         at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)
         at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:132)
         at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter.sort(PipelinedSorter.java:251)
         at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter.collect(PipelinedSorter.java:288)
         at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter.write(PipelinedSorter.java:262)
         at org.apache.tez.runtime.library.output.OrderedPartitionedKVOutput$1.write(OrderedPartitionedKVOutput.java:164)
         at org.apache.hadoop.hive.ql.exec.tez.TezProcessor$TezKVOutputCollector.collect(TezProcessor.java:217)
         at org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.collect(ReduceSinkOperator.java:541)
         at org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.process(ReduceSinkOperator.java:385)
         ... 33 more
      

      Looks like PipelineSorter either got stuck in execution, or some other things were in the thread pool and stuck (again note no other task was running on the machine), or something.

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            • Assignee:
              gopalv Gopal Vijayaraghavan
              Reporter:
              sershe Sergey Shelukhin
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                Updated:
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