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Date: Thu, 10 Aug 2017 15:27:00 +0000 (UTC)
From: "Ted Yu (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
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Subject: [jira] [Commented] (HBASE-18541) [C++] Segfaults from JNI
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archived-at: Thu, 10 Aug 2017 15:27:06 -0000


    [ https://issues.apache.org/jira/browse/HBASE-18541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16121794#comment-16121794 ] 

Ted Yu commented on HBASE-18541:
--------------------------------

[~enis]:
core/async-batch-rpc-retrying-multi-region-test.cc appeared in stack trace.
However, I don't find this file.

Can you double check ?

> [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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