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https://issues.apache.org/jira/browse/HADOOP-4341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12637664#action_12637664
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Craig Macdonald commented on HADOOP-4341:
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Reference counting or a GC pthread, which calls close() on filesystems that
havent been used for a while?
C
> fuse-dfs leaks FileSystem handles as it never disconnects them because the
> FileSystem.Cache does not do reference counting
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-4341
> URL: https://issues.apache.org/jira/browse/HADOOP-4341
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/fuse-dfs, fs
> Affects Versions: 0.19.0
> Reporter: Pete Wyckoff
> Priority: Minor
>
> since users may be doing multiple file operations at the same time, a single
> task in fuse, can never call close() on a filesystem (ie
> libhdfs::hdfsDisconnect) because there may be another thread for the same
> user.
> as such, either fuse-dfs needs to do reference counting or FileSystem.Cache
> needs to or maybe enable a mode where one can turn off the Cache??
> I currently am not seeing any problems in production, but I am still running
> 0.18 version which keeps only one connection as root.
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