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https://issues.apache.org/jira/browse/FLINK-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14547670#comment-14547670
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Stephan Ewen commented on FLINK-2020:
-------------------------------------
This may be a sporadic temp fie failure. I have seen that before also for other
tests.
What I do not understand is why people still write tests with temp files. I
think all new tests should use {{collect()}}.
> Table API JoinITCase fails non-deterministically
> ------------------------------------------------
>
> Key: FLINK-2020
> URL: https://issues.apache.org/jira/browse/FLINK-2020
> Project: Flink
> Issue Type: Bug
> Components: Java API, Table API
> Affects Versions: 0.9
> Reporter: Fabian Hueske
>
> I observed the following failing test case in one of my Travis builds.
> {code}
> Tests run: 14, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 6.526 sec
> <<< FAILURE! - in org.apache.flink.api.scala.table.test.JoinITCase
> testJoinWithMultipleKeys[Execution mode =
> CLUSTER](org.apache.flink.api.scala.table.test.JoinITCase) Time elapsed:
> 0.265 sec <<< FAILURE!
> java.lang.AssertionError: Different number of lines in expected and obtained
> result. expected:<6> but was:<5>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:743)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:555)
> at
> org.apache.flink.test.util.TestBaseUtils.compareResultsByLinesInMemory(TestBaseUtils.java:258)
> at
> org.apache.flink.test.util.TestBaseUtils.compareResultsByLinesInMemory(TestBaseUtils.java:244)
> at
> org.apache.flink.api.scala.table.test.JoinITCase.after(JoinITCase.scala:49)
> {code}
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