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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2755) NM fails to clean up usercache_DEL_<timestamp> dirs after YARN-661
Date Fri, 31 Oct 2014 15:15:44 GMT

    [ https://issues.apache.org/jira/browse/YARN-2755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14191926#comment-14191926
] 

Hudson commented on YARN-2755:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1943 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1943/])
YARN-2755. NM fails to clean up usercache_DEL_<timestamp> dirs after YARN-661. Contributed
by Siqi Li (jlowe: rev 73e626ad91cd5c06a005068d8432fd16e06fe6a0)
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/TestNodeManagerReboot.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/ResourceLocalizationService.java
* hadoop-yarn-project/CHANGES.txt


> NM fails to clean up usercache_DEL_<timestamp> dirs after YARN-661
> ------------------------------------------------------------------
>
>                 Key: YARN-2755
>                 URL: https://issues.apache.org/jira/browse/YARN-2755
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Siqi Li
>            Assignee: Siqi Li
>            Priority: Critical
>             Fix For: 2.6.0
>
>         Attachments: YARN-2755.v1.patch, YARN-2755.v2.patch, YARN-2755.v3.patch, YARN-2755.v4.patch
>
>
> When NM restarts frequently due to some reason, a large number of directories like these
left in /data/disk$num/yarn/local/:
> /data/disk1/yarn/local/usercache_DEL_1414372756105
> /data/disk1/yarn/local/usercache_DEL_1413557901696
> /data/disk1/yarn/local/usercache_DEL_1413657004894
> /data/disk1/yarn/local/usercache_DEL_1413675321860
> /data/disk1/yarn/local/usercache_DEL_1414093167936
> /data/disk1/yarn/local/usercache_DEL_1413565841271
> These directories are empty, but take up 100M+ due to the number of them. There were
38714 on the machine I looked at per data disk.
> It appears to be a regression introduced by YARN-661



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