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Posted to common-issues@hadoop.apache.org by "Arpit Agarwal (JIRA)" <ji...@apache.org> on 2016/03/08 00:16:41 UTC

[jira] [Updated] (HADOOP-12903) IPC Server should allow suppressing exception logging by type, not log 'server too busy' messages

     [ https://issues.apache.org/jira/browse/HADOOP-12903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arpit Agarwal updated HADOOP-12903:
-----------------------------------
    Summary: IPC Server should allow suppressing exception logging by type, not log 'server too busy' messages  (was: Add IPC Server support for suppressing exceptions by type, suppress 'server too busy' messages)

> IPC Server should allow suppressing exception logging by type, not log 'server too busy' messages
> -------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-12903
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12903
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 2.7.2
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>
> HADOOP-10597 added support for RPC congestion control by sending retriable 'server too busy' exceptions to clients. 
> However every backoff results in a log message. We've seen these log messages slow down the NameNode.
> {code}
> 2016-03-07 15:02:23,272 INFO org.apache.hadoop.ipc.Server: Socket Reader #1 for port 8020: readAndProcess from client 127.0.0.1 threw exception [org.apache.hadoop.ipc.RetriableException: Server is too busy.]
> {code}
> We already have a metric that tracks the number of backoff events. This log message adds nothing useful.



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