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From "Brandon Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5364) Add OpenFileCtx cache
Date Fri, 08 Nov 2013 01:52:18 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Li updated HDFS-5364:
-----------------------------

      Resolution: Fixed
    Hadoop Flags: Reviewed
          Status: Resolved  (was: Patch Available)

> Add OpenFileCtx cache
> ---------------------
>
>                 Key: HDFS-5364
>                 URL: https://issues.apache.org/jira/browse/HDFS-5364
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: nfs
>            Reporter: Brandon Li
>            Assignee: Brandon Li
>             Fix For: 2.2.1
>
>         Attachments: HDFS-5364.001.patch, HDFS-5364.002.patch, HDFS-5364.003.patch, HDFS-5364.004.patch,
HDFS-5364.005.patch, HDFS-5364.006.patch, HDFS-5364.007.patch, HDFS-5364.008.patch, HDFS-5364.009.patch
>
>
> NFS gateway can run out of memory when the stream timeout is set to a relatively long
period(e.g., >1 minute) and user uploads thousands of files in parallel.  Each stream DFSClient
creates a DataStreamer thread, and will eventually run out of memory by creating too many
threads.
> NFS gateway should have a OpenFileCtx cache to limit the total opened files. 



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