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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2019/01/04 19:48:03 UTC
[GitHub] jihoonson opened a new pull request #6807: Fix ParallelIndexTask
when publishing empty segments
jihoonson opened a new pull request #6807: Fix ParallelIndexTask when publishing empty segments
URL: https://github.com/apache/incubator-druid/pull/6807
The overlord prints the below error if some task tries to publish empty segments.
```
java.lang.RuntimeException: java.lang.IllegalArgumentException: segment set must not be empty
at org.apache.druid.indexing.common.actions.SegmentTransactionalInsertAction.perform(SegmentTransactionalInsertAction.java:126)
at org.apache.druid.indexing.common.actions.SegmentTransactionalInsertAction.perform(SegmentTransactionalInsertAction.java:47)
at org.apache.druid.indexing.common.actions.LocalTaskActionClient.submit(LocalTaskActionClient.java:74)
at org.apache.druid.indexing.common.task.batch.parallel.SinglePhaseParallelIndexTaskRunner.lambda$publish$3(SinglePhaseParallelIndexTaskRunner.java:385)
at org.apache.druid.indexing.common.task.batch.parallel.SinglePhaseParallelIndexTaskRunner.publish(SinglePhaseParallelIndexTaskRunner.java:396)
at org.apache.druid.indexing.common.task.batch.parallel.SinglePhaseParallelIndexTaskRunner.run(SinglePhaseParallelIndexTaskRunner.java:160)
at org.apache.druid.indexing.common.task.batch.parallel.ParallelIndexSupervisorTaskTest$TestSupervisorTask.run(ParallelIndexSupervisorTaskTest.java:306)
at org.apache.druid.indexing.common.task.batch.parallel.ParallelIndexSupervisorTaskTest.testPublishEmptySegments(ParallelIndexSupervisorTaskTest.java:206)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.IllegalArgumentException: segment set must not be empty
at org.apache.druid.metadata.IndexerSQLMetadataStorageCoordinator.announceHistoricalSegments(IndexerSQLMetadataStorageCoordinator.java:288)
at org.apache.druid.indexing.common.actions.SegmentTransactionalInsertAction.lambda$perform$0(SegmentTransactionalInsertAction.java:115)
at org.apache.druid.indexing.overlord.CriticalAction.perform(CriticalAction.java:53)
at org.apache.druid.indexing.overlord.TaskLockbox.doInCriticalSection(TaskLockbox.java:618)
at org.apache.druid.indexing.common.actions.SegmentTransactionalInsertAction.perform(SegmentTransactionalInsertAction.java:110)
... 34 more
```
I think it's better to leave this as it is, but make the parallelIndexTask not to publish empty segments.
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