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Posted to mapreduce-issues@hadoop.apache.org by "Devaraj K (Resolved) (JIRA)" <ji...@apache.org> on 2012/04/11 16:43:18 UTC
[jira] [Resolved] (MAPREDUCE-4137) MRAppMaster shutdown hook should
not call FileSystem.closeAll()
[ https://issues.apache.org/jira/browse/MAPREDUCE-4137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Devaraj K resolved MAPREDUCE-4137.
----------------------------------
Resolution: Duplicate
> MRAppMaster shutdown hook should not call FileSystem.closeAll()
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-4137
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4137
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 2.0.0
> Reporter: Alejandro Abdelnur
> Fix For: 2.0.0
>
>
> Filesystem.closeAll() attempts to remove the FileSystem shutdown hook.
> This triggers an exception
> {code}
> Exception in thread "Thread-1" java.lang.IllegalStateException: Shutdown in progress
> at java.lang.ApplicationShutdownHooks.remove(ApplicationShutdownHooks.java:55)
> at java.lang.Runtime.removeShutdownHook(Runtime.java:220)
> at org.apache.hadoop.fs.FileSystem$Cache.remove(FileSystem.java:2101)
> at org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:2133)
> at org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:2110)
> at org.apache.hadoop.fs.FileSystem.closeAll(FileSystem.java:361)
> at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$MRAppMasterShutdownHook.run(MRAppMaster.java:1013)
> {code}
> Besides, because the FileSystem has its own shutdown hook that does a closeAll() the call from MRAppMaster is not needed.
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