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Appy commented on HBASE-19803: ------------------------------ Pushing and starting another nightly run. I have a part which tells that this might not be useful since java always tries to core dump on vm crash (at worst, in /tmp dir), and if there were any core dumps happening, surefire plugin should have caught them anyways (irrespective of location) and generated a *.dumpstream file in surefire-reports. I see 5 .dump files (not .dumpstream) in test_logs.zip of [https://builds.apache.org/job/HBase%20Nightly/job/branch-2/197|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/197.]. That -rw-r--r-- 1 appy staff 226B Jan 23 14:43 2018-01-23T20-53-29_364-jvmRun1.dump -rw-r--r-- 1 appy staff 226B Jan 23 14:43 2018-01-23T20-53-29_364-jvmRun2.dump -rw-r--r-- 1 appy staff 331B Jan 23 14:43 2018-01-23T20-53-29_364-jvmRun3.dump -rw-r--r-- 1 appy staff 226B Jan 23 14:43 2018-01-23T20-53-29_364-jvmRun4.dump -rw-r--r-- 1 appy staff 226B Jan 23 14:43 2018-01-23T20-53-29_364-jvmRun5.dump What i don't understand is, why does surefire plugin try to stop all 5 jvms at exactly 21:55:35 and 22:43:34. > False positive for the HBASE-Find-Flaky-Tests job > ------------------------------------------------- > > Key: HBASE-19803 > URL: https://issues.apache.org/jira/browse/HBASE-19803 > Project: HBase > Issue Type: Bug > Reporter: Duo Zhang > Priority: Major > Attachments: 2018-01-24T17-45-37_000-jvmRun1.dumpstream, > HBASE-19803.master.001.patch > > > It reports two hangs for TestAsyncTableGetMultiThreaded, but I checked the > surefire output > https://builds.apache.org/job/HBASE-Flaky-Tests/24830/artifact/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.client.TestAsyncTableGetMultiThreaded-output.txt > This one was likely to be killed in the middle of the run within 20 seconds. > https://builds.apache.org/job/HBASE-Flaky-Tests/24852/artifact/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.client.TestAsyncTableGetMultiThreaded-output.txt > This one was also killed within about 1 minutes. > The test is declared as LargeTests so the time limit should be 10 minutes. It > seems that the jvm may crash during the mvn test run and then we will kill > all the running tests and then we may mark some of them as hang which leads > to the false positive. -- This message was sent by Atlassian JIRA (v7.6.3#76005)