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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18541) [C++] Segfaults from JNI
Date Thu, 10 Aug 2017 22:11:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16122431#comment-16122431

Ted Yu commented on HBASE-18541:

The crash was after this line in HMaster.java :
    LOG.info(getClientIdAuditPrefix() + " create " + hTableDescriptor);
Added more log after the above and rerunning.

> [C++] Segfaults from JNI
> ------------------------
>                 Key: HBASE-18541
>                 URL: https://issues.apache.org/jira/browse/HBASE-18541
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Enis Soztutar
>            Assignee: Ted Yu
> retry-test and multi-retry-test fails flakily when run with 
> {code}
> buck test --all --no-results-cache
> {code}
> or when run in a loop:
> {code}
> for i in `seq 1 10`; do buck test --no-results-cache core:retry-test || break 1; done
> {code}
> The problem seems to be within the JNI internals and usually happens at the create table
method call. I was not able to inspect much, but the comments in our mini-cluster indicate
that we may need to use global references instead of local ones. I suspect the problem happens
when there is a GC run for the test since the failure happens usually after some time (but
almost always in create table method). 
> [~ted_yu] do you mind taking a look at this. 

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