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Hudson commented on HADOOP-6963:
--------------------------------
Integrated in Hadoop-Common-trunk-Commit #2006 (See [https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2006/])
Moved HADOOP-6963 to 0.23.3 (Revision 1310022)
Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1310022
Files :
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
> Fix FileUtil.getDU. It should not include the size of the directory or follow symbolic
links
> --------------------------------------------------------------------------------------------
>
> Key: HADOOP-6963
> URL: https://issues.apache.org/jira/browse/HADOOP-6963
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.20.205.0, 0.23.1
> Reporter: Owen O'Malley
> Assignee: Ravi Prakash
> Priority: Critical
> Fix For: 1.0.3, 0.23.3
>
> Attachments: HADOOP-6963.branch-1.0.2.patch, HADOOP-6963.branch-1.0.2.patch,
HADOOP-6963.branch-1.patch, HADOOP-6963.branch-23.patch, HADOOP-6963.branch-23.patch, HADOOP-6963.branch-23.patch
>
>
> The getDU method should not include the size of the directory. The Java interface says
that the value is undefined and in Linux/Sun it gets the 4096 for the inode. Clearly this
isn't useful.
> It also recursively calls itself. In case the directory has a symbolic link forming a
cycle, getDU keeps spinning in the cycle. In our case, we saw this in the org.apache.hadoop.mapred.JobLocalizer.downloadPrivateCacheObjects
call. This prevented other tasks on the same node from committing, causing the TT to become
effectively useless (because the JT thinks it already has enough tasks running)
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