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https://issues.apache.org/jira/browse/HDFS-4122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13486090#comment-13486090
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Todd Lipcon commented on HDFS-4122:
-----------------------------------
This should be considered an incompatible change, right? People have may have
alerts on the specific content of HDFS logs (eg using software like splunk)
> Cleanup HDFS logs and reduce the size of logged messages
> --------------------------------------------------------
>
> Key: HDFS-4122
> URL: https://issues.apache.org/jira/browse/HDFS-4122
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node, hdfs client, name-node
> Affects Versions: 1.0.0, 2.0.0-alpha
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Fix For: 1.2.0, 3.0.0
>
> Attachments: log.chatty.cleanup.branch1.patch,
> log.chatty.cleanup.branch1.patch, log.chatty.cleanup.branch1.patch,
> log.chatty.cleanup.trunk.patch, log.chatty.cleanup.trunk.patch,
> log.chatty.cleanup.trunk.patch
>
>
> I have attached the patch that removes unnecessary information from the log
> such as "Namesystem." and prefixing file information with "file" and block
> information with "block" etc.
> On a branch-1 log I saw it reduce the log size by ~10%.
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