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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4714) Log short messages in Namenode RPC server for exceptions meant for clients
Date Thu, 23 May 2013 22:31:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Kihwal Lee updated HDFS-4714:

       Resolution: Fixed
    Fix Version/s: 0.23.8
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)
> Log short messages in Namenode RPC server for exceptions meant for clients
> --------------------------------------------------------------------------
>                 Key: HDFS-4714
>                 URL: https://issues.apache.org/jira/browse/HDFS-4714
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.0.0, 0.23.7, 2.0.5-beta
>            Reporter: Kihwal Lee
>             Fix For: 3.0.0, 2.0.5-beta, 0.23.8
>         Attachments: hdfs-4714.branch-0.23.patch.txt, hdfs-4714.branch-2.patch.txt, hdfs-4714.patch.txt
> Namenode can slow down significantly if a rogue client/job issues massive number of requests
that will fail. E.g. permission denied, quota overage, etc.  The major contributing factor
in slow down is the long namenode log message, which includes full stack trace.  
> Previously similar issues involving safe mode and standby node have been addressed and
we can extend it to suppress logging stack traces for configured list of exception classes.

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