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From "omkar vinit joshi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-467) Jobs fail during resource localization when directories in file cache reaches to unix directory limit for public cache
Date Tue, 12 Mar 2013 00:17:13 GMT
omkar vinit joshi created YARN-467:
--------------------------------------

             Summary: Jobs fail during resource localization when directories in file cache
reaches to unix directory limit for public cache
                 Key: YARN-467
                 URL: https://issues.apache.org/jira/browse/YARN-467
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 2.0.0-alpha, 3.0.0
            Reporter: omkar vinit joshi
            Assignee: omkar vinit joshi


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
(PUBLIC). The jobs start failing with the below exception.

java.io.IOException: mkdir of /tmp/nm-local-dir/filecache/3901886847734194975 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)

we need to have a mechanism where in we can create directory hierarchy and limit number of
files per directory.

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