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From "Pete Wyckoff (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4341) fuse-dfs leaks FileSystem handles as it never disconnects them because the FileSystem.Cache does not do reference counting
Date Sat, 04 Oct 2008 00:43:44 GMT
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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