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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19803) False positive for the HBASE-Find-Flaky-Tests job
Date Fri, 26 Jan 2018 09:10:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16340761#comment-16340761
] 

Duo Zhang commented on HBASE-19803:
-----------------------------------

{quote}
For eg, a medium test class with 6 methods where each takes 2.5 minute each (within Timeout
rule), will take total time 15min.
{quote}
Bad news...

> 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.



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