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https://issues.apache.org/jira/browse/HDFS-4714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe reassigned HDFS-4714:
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Assignee: Kihwal Lee
> 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, 2.1.0-beta
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Fix For: 3.0.0, 2.1.0-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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