[FLINK-2596] Failing Test: RandomSamplerTest

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.10.0
• Component/s: Tests
• Labels: test-stability
• Assignee: Chengxiang Li
• Reporter: Matthias J. Sax
• Created: 28/Aug/15 21:48
• Updated: 02/Sep/15 07:44
• Resolved: 01/Sep/15 10:00

Description

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 » IllegalArgument

https://travis-ci.org/apache/flink/jobs/77750329