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https://issues.apache.org/jira/browse/FLINK-8148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nico Kruber updated FLINK-8148:
-------------------------------
    Labels: test-stability  (was: )

> Test instability in YarnFileStageTest
> -------------------------------------
>
>                 Key: FLINK-8148
>                 URL: https://issues.apache.org/jira/browse/FLINK-8148
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests, YARN
>    Affects Versions: 1.4.0
>            Reporter: Nico Kruber
>            Assignee: Nico Kruber
>            Priority: Critical
>              Labels: test-stability
>
> {code}
> Running org.apache.flink.yarn.YarnFileStageTestS3ITCase
> Tests run: 3, Failures: 1, Errors: 0, Skipped: 1, Time elapsed: 13.152 sec 
> <<< FAILURE! - in org.apache.flink.yarn.YarnFileStageTestS3ITCase
> testRecursiveUploadForYarnS3(org.apache.flink.yarn.YarnFileStageTestS3ITCase) 
>  Time elapsed: 8.515 sec  <<< FAILURE!
> java.lang.AssertionError: null
>       at org.junit.Assert.fail(Assert.java:86)
>       at org.junit.Assert.assertTrue(Assert.java:41)
>       at org.junit.Assert.assertFalse(Assert.java:64)
>       at org.junit.Assert.assertFalse(Assert.java:74)
>       at 
> org.apache.flink.yarn.YarnFileStageTestS3ITCase.testRecursiveUploadForYarn(YarnFileStageTestS3ITCase.java:171)
>       at 
> org.apache.flink.yarn.YarnFileStageTestS3ITCase.testRecursiveUploadForYarnS3(YarnFileStageTestS3ITCase.java:192)
> {code}
> from https://travis-ci.org/apache/flink/jobs/305861539
> {{YarnFileStageTestS3ITCase.testRecursiveUploadForYarn}} verifies that the 
> test directory used is cleaned up by 
> {{YarnFileStageTest.testCopyFromLocalRecursive}} which should clean up the 
> directory (in a {{finally}} block). However, for S3, we may not always see 
> our own deletes.
> Quoting from https://aws.amazon.com/s3/faqs/ here:
> {quote}Q: What data consistency model does Amazon S3 employ?
> Amazon S3 buckets in all Regions provide read-after-write consistency for 
> PUTS of new objects and eventual consistency for overwrite PUTS and 
> DELETES.{quote}



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