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https://issues.apache.org/jira/browse/HADOOP-15726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16915487#comment-16915487
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Chen Zhang commented on HADOOP-15726:
-------------------------------------

Hi [~xkrogen], the patch of this Jira only throttle log of write-lock, don't 
consider log of read-lock, any consideration here?

> Create utility to limit frequency of log statements
> ---------------------------------------------------
>
>                 Key: HADOOP-15726
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15726
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: common, util
>            Reporter: Erik Krogen
>            Assignee: Erik Krogen
>            Priority: Major
>             Fix For: 2.10.0, 3.2.0, 3.0.4, 3.1.2
>
>         Attachments: HADOOP-15726.000.patch, HADOOP-15726.001.patch, 
> HADOOP-15726.002.patch, HADOOP-15726.003.patch, 
> HDFS-15726-branch-3.0.003.patch
>
>
> There is a common pattern of logging a behavior that is normally extraneous. 
> Under some circumstances, such a behavior becomes common, flooding the logs 
> and making it difficult to see what else is going on in the system. Under 
> such situations it is beneficial to limit how frequently the extraneous 
> behavior is logged, while capturing some summary information about the 
> suppressed log statements.
> This is currently implemented in {{FSNamesystemLock}} (in HDFS-10713). We 
> have additional use cases for this in HDFS-13791, so this is a good time to 
> create a common utility for different sites to share this logic.



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