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https://issues.apache.org/jira/browse/MAPREDUCE-1914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13000079#comment-13000079
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Hadoop QA commented on MAPREDUCE-1914:
--------------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12450923/MAPREDUCE-1914--2010-07-30--1336.patch
against trunk revision 1074251.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
-1 javac. The patch appears to cause tar ant target to fail.
-1 findbugs. The patch appears to cause Findbugs (version 1.3.9) to fail.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
-1 core tests. The patch failed these core unit tests:
-1 contrib tests. The patch failed contrib unit tests.
-1 system test framework. The patch failed system test framework compile.
Test results:
https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/76//testReport/
Console output:
https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/76//console
This message is automatically generated.
> TrackerDistributedCacheManager never cleans its input directories
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-1914
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1914
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Dick King
> Assignee: Dick King
> Attachments: MAPREDUCE-1914--2010-07-30--1336.patch
>
>
> When we localize a file into a node's cache, it's installed in a directory
> whose subroot is a random {{long}} . These {{long}} s all sit in a single
> flat directory [per disk, per cluster node]. When the cached file is no
> longer needed, its reference count becomes zero in a tracking data structure.
> The file then becomes eligible for deletion when the total amount of space
> occupied by cached files exceeds 10G [by default] or the total number of such
> files exceeds 10K.
> However, when we delete a cached file, we don't delete the directory that
> contains it; this importantly includes the elements of the flat directory,
> which then accumulate until they reach a system limit, 32K in some cases, and
> then the node stops working.
> We need to delete the flat directory when we delete the localized cache file
> it contains.
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