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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6136) MRAppMaster doesn't shutdown file systems
Date Thu, 05 Mar 2015 05:45:39 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14348189#comment-14348189
] 

Hudson commented on MAPREDUCE-6136:
-----------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #7264 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/7264/])
MAPREDUCE-6136. MRAppMaster doesn't shutdown file systems. Contributed by Brahma Reddy Battula.
(ozawa: rev 348208014b2023894dc416dcd733a9ccdafc6e25)
* hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java
* hadoop-mapreduce-project/CHANGES.txt


> MRAppMaster doesn't shutdown file systems
> -----------------------------------------
>
>                 Key: MAPREDUCE-6136
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6136
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster
>    Affects Versions: 2.4.1, 2.6.0
>            Reporter: Noah Watkins
>            Assignee: Brahma Reddy Battula
>             Fix For: 2.7.0
>
>         Attachments: MAPRED-6136.patch
>
>
> When MRAppMaster exit it doesn't call close on its open file systems instances.
> MAPREDUCE-3614 sets conf.setBoolean("fs.automatic.close", false); in MRAppMaster::main
and then called FileSystem.closeAll() in MRAppMasterShutdownHook.
> However, MAPREDUCE-4205 removed the call to FileSystem.closeAll() MRAppMasterShutdownHook
but left `fs.automatic.close` set to false.
> Removing `conf.setBoolean("fs.automatic.close", false);` worked for me, but it wasn't
clear if this had other implications.



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