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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-99) Jobs fail during resource localization when private distributed-cache hits unix directory limits
Date Mon, 08 Apr 2013 23:58:17 GMT

    [ https://issues.apache.org/jira/browse/YARN-99?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13626002#comment-13626002
] 

Hadoop QA commented on YARN-99:
-------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12577654/yarn-99-20130408.1.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 4 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/687//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/687//console

This message is automatically generated.
                
> Jobs fail during resource localization when private distributed-cache hits unix directory
limits
> ------------------------------------------------------------------------------------------------
>
>                 Key: YARN-99
>                 URL: https://issues.apache.org/jira/browse/YARN-99
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 3.0.0, 2.0.0-alpha
>            Reporter: Devaraj K
>            Assignee: Omkar Vinit Joshi
>         Attachments: yarn-99-20130324.patch, yarn-99-20130403.1.patch, yarn-99-20130403.patch,
yarn-99-20130408.1.patch, yarn-99-20130408.patch
>
>
> If we have multiple jobs which uses distributed cache with small size of files, the directory
limit reaches before reaching the cache size and fails to create any directories in file cache.
The jobs start failing with the below exception.
> {code:xml}
> java.io.IOException: mkdir of /tmp/nm-local-dir/usercache/root/filecache/1701886847734194975
failed
> 	at org.apache.hadoop.fs.FileSystem.primitiveMkdir(FileSystem.java:909)
> 	at org.apache.hadoop.fs.DelegateToFileSystem.mkdir(DelegateToFileSystem.java:143)
> 	at org.apache.hadoop.fs.FilterFs.mkdir(FilterFs.java:189)
> 	at org.apache.hadoop.fs.FileContext$4.next(FileContext.java:706)
> 	at org.apache.hadoop.fs.FileContext$4.next(FileContext.java:703)
> 	at org.apache.hadoop.fs.FileContext$FSLinkResolver.resolve(FileContext.java:2325)
> 	at org.apache.hadoop.fs.FileContext.mkdir(FileContext.java:703)
> 	at org.apache.hadoop.yarn.util.FSDownload.call(FSDownload.java:147)
> 	at org.apache.hadoop.yarn.util.FSDownload.call(FSDownload.java:49)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:662)
> {code}
> We should have a mechanism to clean the cache files if it crosses specified number of
directories like cache size.

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