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Posted to yarn-issues@hadoop.apache.org by "Zhiyuan Yang (JIRA)" <ji...@apache.org> on 2016/07/27 22:23:21 UTC
[jira] [Comment Edited] (YARN-5436) Race in AsyncDispatcher can
cause random test failures in Tez(probably YARN also )
[ https://issues.apache.org/jira/browse/YARN-5436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15396514#comment-15396514 ]
Zhiyuan Yang edited comment on YARN-5436 at 7/27/16 10:23 PM:
--------------------------------------------------------------
Thanks [~gtCarrera9] for reviewing the patch. Sorry for misusing the term 'data race'. Already rephrased the comments.
was (Author: aplusplus):
Thanks [~gtCarrera9] for review the patch. Sorry for misusing the term 'data race'. Already rephrased the comments.
> Race in AsyncDispatcher can cause random test failures in Tez(probably YARN also )
> ----------------------------------------------------------------------------------
>
> Key: YARN-5436
> URL: https://issues.apache.org/jira/browse/YARN-5436
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Zhiyuan Yang
> Assignee: Zhiyuan Yang
> Attachments: YARN-5436.1.patch, YARN-5436.2.patch, YARN-5436.3.patch
>
>
> In YARN-2264, a race in DrainDispatcher was fixed. Unfortunately, it also exists in AsyncDispatcher (this was found and ignored in YARN-3878 but never documented...). In YARN-2991, another DrainDispatcher bug was fixed by letting DrainDispatcher reuse some AsyncDispatcher method because AsyncDispatcher doesn't have such issue. However, this shadows YARN-2264, and now similar race reappears in Tez unit tests (probably also YARN unit tests also).
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