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https://issues.apache.org/jira/browse/FLINK-1432?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephan Ewen resolved FLINK-1432.
---------------------------------
Resolution: Fixed
Fix Version/s: 0.9
Assignee: Stephan Ewen
Fixed via fab1bd9dc9ab43196a3d136f63b77d4b1d58b452
> CombineTaskTest.testCancelCombineTaskSorting sometimes fails
> ------------------------------------------------------------
>
> Key: FLINK-1432
> URL: https://issues.apache.org/jira/browse/FLINK-1432
> Project: Flink
> Issue Type: Bug
> Reporter: Robert Metzger
> Assignee: Stephan Ewen
> Fix For: 0.9
>
>
> We have a bunch of tests which fail only in rare cases on travis.
> https://s3.amazonaws.com/archive.travis-ci.org/jobs/47783455/log.txt
> {code}
> Exception in thread "Thread-17" java.lang.AssertionError: Canceling task
> failed: java.util.ConcurrentModificationException
> at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:859)
> at java.util.ArrayList$Itr.next(ArrayList.java:831)
> at
> org.apache.flink.runtime.memorymanager.DefaultMemoryManager.release(DefaultMemoryManager.java:290)
> at
> org.apache.flink.runtime.operators.GroupReduceCombineDriver.cancel(GroupReduceCombineDriver.java:221)
> at
> org.apache.flink.runtime.operators.testutils.DriverTestBase.cancel(DriverTestBase.java:272)
> at
> org.apache.flink.runtime.operators.testutils.TaskCancelThread.run(TaskCancelThread.java:60)
> at org.junit.Assert.fail(Assert.java:88)
> at
> org.apache.flink.runtime.operators.testutils.TaskCancelThread.run(TaskCancelThread.java:68)
> java.lang.NullPointerException
> at
> org.apache.flink.runtime.memorymanager.DefaultMemoryManager.release(DefaultMemoryManager.java:291)
> at
> org.apache.flink.runtime.operators.GroupReduceCombineDriver.cleanup(GroupReduceCombineDriver.java:213)
> at
> org.apache.flink.runtime.operators.testutils.DriverTestBase.testDriverInternal(DriverTestBase.java:245)
> at
> org.apache.flink.runtime.operators.testutils.DriverTestBase.testDriver(DriverTestBase.java:175)
> at
> org.apache.flink.runtime.operators.CombineTaskTest$1.run(CombineTaskTest.java:143)
> Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 2.172 sec <<<
> FAILURE! - in org.apache.flink.runtime.operators.CombineTaskTest
> testCancelCombineTaskSorting[0](org.apache.flink.runtime.operators.CombineTaskTest)
> Time elapsed: 1.023 sec <<< FAILURE!
> java.lang.AssertionError: Exception was thrown despite proper canceling.
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.assertTrue(Assert.java:41)
> at
> org.apache.flink.runtime.operators.CombineTaskTest.testCancelCombineTaskSorting(CombineTaskTest.java:162)
> {code}
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