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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-8268) Test instability for 'TwoPhaseCommitSinkFunctionTest'
Date Thu, 21 Dec 2017 23:32:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-8268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16300725#comment-16300725
] 

ASF GitHub Bot commented on FLINK-8268:
---------------------------------------

Github user tzulitai commented on a diff in the pull request:

    https://github.com/apache/flink/pull/5193#discussion_r158400189
  
    --- Diff: flink-streaming-java/src/test/java/org/apache/flink/streaming/util/AbstractStreamOperatorTestHarness.java
---
    @@ -492,6 +503,10 @@ public void close() throws Exception {
     			processingTimeService.shutdownService();
     		}
     		setupCalled = false;
    +
    +		if (internalEnvironment.isPresent()) {
    --- End diff --
    
    Or, another option, if we make sure the `MockEnvironment::close()` method is idempotent,
we don't really need to differentiate whether or not the environment is internally created,
and just always close the environment when closing the test harness.
    
    That could probably make things even more safer?


> Test instability for 'TwoPhaseCommitSinkFunctionTest'
> -----------------------------------------------------
>
>                 Key: FLINK-8268
>                 URL: https://issues.apache.org/jira/browse/FLINK-8268
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 1.5.0
>            Reporter: Stephan Ewen
>            Assignee: Piotr Nowojski
>            Priority: Critical
>              Labels: test-stability
>
> The following exception / failure message occurs.
> {code}
> Tests run: 5, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 1.824 sec <<<
FAILURE! - in org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest
> testIgnoreCommitExceptionDuringRecovery(org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest)
 Time elapsed: 0.068 sec  <<< ERROR!
> java.lang.Exception: Could not complete snapshot 0 for operator MockTask (1/1).
> 	at java.io.FileOutputStream.writeBytes(Native Method)
> 	at java.io.FileOutputStream.write(FileOutputStream.java:326)
> 	at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
> 	at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
> 	at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295)
> 	at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)
> 	at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)
> 	at java.io.BufferedWriter.flush(BufferedWriter.java:254)
> 	at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest$FileBasedSinkFunction.preCommit(TwoPhaseCommitSinkFunctionTest.java:313)
> 	at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest$FileBasedSinkFunction.preCommit(TwoPhaseCommitSinkFunctionTest.java:288)
> 	at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.snapshotState(TwoPhaseCommitSinkFunction.java:290)
> 	at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.trySnapshotFunctionState(StreamingFunctionUtils.java:118)
> 	at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.snapshotFunctionState(StreamingFunctionUtils.java:99)
> 	at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.snapshotState(AbstractUdfStreamOperator.java:90)
> 	at org.apache.flink.streaming.api.operators.AbstractStreamOperator.snapshotState(AbstractStreamOperator.java:357)
> 	at org.apache.flink.streaming.util.AbstractStreamOperatorTestHarness.snapshot(AbstractStreamOperatorTestHarness.java:459)
> 	at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunctionTest.testIgnoreCommitExceptionDuringRecovery(TwoPhaseCommitSinkFunctionTest.java:208)
> {code}



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