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Posted to yarn-issues@hadoop.apache.org by "liuxiangwei (JIRA)" <ji...@apache.org> on 2016/12/15 05:46:59 UTC
[jira] [Commented] (YARN-5939) FSDownload leaks FileSystem
resources
[ https://issues.apache.org/jira/browse/YARN-5939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15750463#comment-15750463 ]
liuxiangwei commented on YARN-5939:
-----------------------------------
It works well on our cluster with about 700 machines, thank you very match.
> FSDownload leaks FileSystem resources
> -------------------------------------
>
> Key: YARN-5939
> URL: https://issues.apache.org/jira/browse/YARN-5939
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.5.1, 2.7.3
> Reporter: liuxiangwei
> Assignee: Weiwei Yang
> Attachments: YARN-5939.01.patch, YARN-5939.02.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> Background
> To use our self-defined FileSystem class, the item of configuration "fs.%s.impl.disable.cache" should set to true.
> In YARN's source code, the class named "org.apache.hadoop.yarn.util.FSDownload" use getFileSystem but never close, which leading to file descriptor leak because our self-defined FileSystem class close the file descriptor when the close function is invoked.
> My Question below:
> 1. whether invoking "getFileSystem" but never close is YARN's expected behavior
> 2. what should we do in our self-defined FileSystem resolve it.
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