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From "Devaraj K (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4135) MRAppMaster throws IllegalStateException while shutting down
Date Thu, 12 Apr 2012 07:06:31 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4135?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Devaraj K updated MAPREDUCE-4135:

    Affects Version/s: 2.0.0
               Status: Patch Available  (was: Open)

As Alejandro mentioned in MAPREDUCE-4137, Calling FileSystem.closeAll() from MRAppMaster is
not required because the FileSystem has its own shutdown hook ClientFinalizer which does closeAll().

I have removed it and attached the patch. I have not added any tests because it is just code
removal and verified it manually.
> MRAppMaster throws IllegalStateException while shutting down
> ------------------------------------------------------------
>                 Key: MAPREDUCE-4135
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4135
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 2.0.0, 3.0.0
>            Reporter: Devaraj K
>            Assignee: Devaraj K
>         Attachments: MAPREDUCE-4135.patch
> Always MRAppMaster throws IllegalStateException in the stderr while shutting down. It
doesn't look good having this exception in the stderr file of MRAppMaster container.
> {code:xml}
> WARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated. Please use org.apache.hadoop.log.metrics.EventCounter
in all the log4j.properties files.
> 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$Cache.remove(FileSystem.java:2148)
> 	at org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:2180)
> 	at org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:2157)
> 	at org.apache.hadoop.fs.FileSystem.closeAll(FileSystem.java:361)
> 	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$MRAppMasterShutdownHook.run(MRAppMaster.java:1014)
> {code}

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