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https://issues.apache.org/jira/browse/FLINK-2596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14723000#comment-14723000
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ASF GitHub Bot commented on FLINK-2596:
---------------------------------------
GitHub user ChengXiangLi opened a pull request:
https://github.com/apache/flink/pull/1080
[FLINK-2596] Failing Test: RandomSamplerTest
Remove the non-transitive comparator which cause this issue, default Double
comparator works just fine.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ChengXiangLi/flink FLINK-2596
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1080.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1080
----
commit 87d53380e8f83841011f787801042b7ca9560bd8
Author: chengxiang li <chengxiang...@intel.com>
Date: 2015-08-31T06:02:27Z
[FLINK-2596] Remove non-tranitive comparator in random sampler test.
----
> Failing Test: RandomSamplerTest
> -------------------------------
>
> Key: FLINK-2596
> URL: https://issues.apache.org/jira/browse/FLINK-2596
> Project: Flink
> Issue Type: Bug
> Components: Tests
> Reporter: Matthias J. Sax
> Assignee: Chengxiang Li
> Priority: Critical
> Labels: test-stability
>
> {noformat}
> Tests run: 17, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 14.925 sec
> <<< FAILURE! - in org.apache.flink.api.java.sampling.RandomSamplerTest
> testReservoirSamplerWithMultiSourcePartitions2(org.apache.flink.api.java.sampling.RandomSamplerTest)
> Time elapsed: 0.444 sec <<< ERROR!
> java.lang.IllegalArgumentException: Comparison method violates its general
> contract!
> at java.util.TimSort.mergeLo(TimSort.java:747)
> at java.util.TimSort.mergeAt(TimSort.java:483)
> at java.util.TimSort.mergeCollapse(TimSort.java:410)
> at java.util.TimSort.sort(TimSort.java:214)
> at java.util.TimSort.sort(TimSort.java:173)
> at java.util.Arrays.sort(Arrays.java:659)
> at java.util.Collections.sort(Collections.java:217)
> at
> org.apache.flink.api.java.sampling.RandomSamplerTest.transferFromListToArrayWithOrder(RandomSamplerTest.java:375)
> at
> org.apache.flink.api.java.sampling.RandomSamplerTest.getSampledOutput(RandomSamplerTest.java:367)
> at
> org.apache.flink.api.java.sampling.RandomSamplerTest.verifyKSTest(RandomSamplerTest.java:338)
> at
> org.apache.flink.api.java.sampling.RandomSamplerTest.verifyRandomSamplerWithSampleSize(RandomSamplerTest.java:330)
> at
> org.apache.flink.api.java.sampling.RandomSamplerTest.verifyReservoirSamplerWithReplacement(RandomSamplerTest.java:290)
> at
> org.apache.flink.api.java.sampling.RandomSamplerTest.testReservoirSamplerWithMultiSourcePartitions2(RandomSamplerTest.java:212)
> Results :
> Tests in error:
> RandomSamplerTest.testReservoirSamplerWithMultiSourcePartitions2:212->verifyReservoirSamplerWithReplacement:290->verifyRandomSamplerWithSampleSize:330->verifyKSTest:338->getSampledOutput:367->transferFromListToArrayWithOrder:375
> ยป IllegalArgument
> {noformat}
> https://travis-ci.org/apache/flink/jobs/77750329
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