Nico Kruber created FLINK-8148:
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Summary: 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
{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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