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https://issues.apache.org/jira/browse/FLINK-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14135346#comment-14135346
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Timo Walther commented on FLINK-1077:
-------------------------------------
I tried to reproduce your error, but without success. I have opened a PR for an
improved error output, if the error occurs again.
I tried the test in eclipse multiple times as well as with the following script:
{code}
cd ~/flink/incubator-flink
while true ; do
echo "New run"
part=$(mvn -pl=flink-clients
-Dtest=CliFrontendPackageProgramTest#testPlanWithExternalClass test)
if ! grep 'BUILD SUCCESS' <<< "$part" ; then
echo "FAILURE:"
echo "$part"
break
fi
done
{code}
> Flakey test CliFrontendPackageProgramTest
> -----------------------------------------
>
> Key: FLINK-1077
> URL: https://issues.apache.org/jira/browse/FLINK-1077
> Project: Flink
> Issue Type: Bug
> Reporter: Stephan Ewen
> Assignee: Timo Walther
>
> Test is error is CliFrontendPackageProgramTest # testPlanWithExternalClass()
> The error occurs in my recent travis builds one in 10 times or so.
> The following stack trace describes the error:
> {code}
> java.lang.AssertionError
> at org.junit.Assert.fail(Assert.java:86)
> at org.junit.Assert.assertTrue(Assert.java:41)
> at org.junit.Assert.assertTrue(Assert.java:52)
> at
> org.apache.flink.client.CliFrontendPackageProgramTest$1.loadClass(CliFrontendPackageProgramTest.java:249)
> {code}
> Is it possible that race conditions cause the classloader to be used for
> different classes as well? In any case, the test should change the assertion
> to assertEquals, such that the expected name is part of the error message
> (helps debugging what went wrong).
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