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https://issues.apache.org/jira/browse/MAPREDUCE-2324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13067297#comment-13067297
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Hadoop QA commented on MAPREDUCE-2324:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12486922/MR-2324-security-v2.txt
against trunk revision 1147981.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 6 new or modified tests.
-1 patch. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/478//console
This message is automatically generated.
> Job should fail if a reduce task can't be scheduled anywhere
> ------------------------------------------------------------
>
> Key: MAPREDUCE-2324
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2324
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.2, 0.20.205.0
> Reporter: Todd Lipcon
> Assignee: Robert Joseph Evans
> Attachments: MR-2324-security-v1.txt, MR-2324-security-v2.txt
>
>
> If there's a reduce task that needs more disk space than is available on any
> mapred.local.dir in the cluster, that task will stay pending forever. For
> example, we produced this in a QA cluster by accidentally running terasort
> with one reducer - since no mapred.local.dir had 1T free, the job remained in
> pending state for several days. The reason for the "stuck" task wasn't clear
> from a user perspective until we looked at the JT logs.
> Probably better to just fail the job if a reduce task goes through all TTs
> and finds that there isn't enough space.
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