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https://issues.apache.org/jira/browse/HDFS-5211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13768939#comment-13768939
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Tsz Wo (Nicholas), SZE commented on HDFS-5211:
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Should we remove super.processDeleteOnExit()? FileSystem.close() already has
it.
> Race condition between DistributedFileSystem#close and FileSystem#close can
> cause return of a closed DistributedFileSystem instance from the FileSystem
> cache.
> --------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-5211
> URL: https://issues.apache.org/jira/browse/HDFS-5211
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 1.2.1
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-5211.1.patch
>
>
> {{DistributedFileSystem#close}} closes the underlying {{DFSClient}} before
> the superclass call to {{FileSystem#close}}, which removes the instance from
> the cache. This leaves a small window during which another thread can call
> {{FileSystem#get}} and receive the closed instance from the cache.
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