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https://issues.apache.org/jira/browse/MAPREDUCE-4135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13251441#comment-13251441
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Steve Loughran commented on MAPREDUCE-4135:
-------------------------------------------
The problem is that the FS shutdown process is being triggered by the app
master shutdown hook -at which point it is too late to remove other shutdown
hooks.
{{FileSystem.Cache.remove()}} should just catch any {{IllegalStateException}}
and not worry so much about shutdown hook state failures as the system is
usually in an odd state at this point.
> 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: 3.0.0
> Reporter: Devaraj K
>
> 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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