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https://issues.apache.org/jira/browse/HDFS-10798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15886834#comment-15886834
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Andrew Wang commented on HDFS-10798:
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Thanks for the background Erik. I filed a simple patch on HDFS-11466 to bump
this default to 5000ms, we can continue the discussion there.
> Make the threshold of reporting FSNamesystem lock contention configurable
> -------------------------------------------------------------------------
>
> Key: HDFS-10798
> URL: https://issues.apache.org/jira/browse/HDFS-10798
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: logging, namenode
> Reporter: Zhe Zhang
> Assignee: Erik Krogen
> Labels: newbie
> Fix For: 2.8.0, 2.7.4, 3.0.0-alpha1
>
> Attachments: HDFS-10789.001.patch, HDFS-10789.002.patch
>
>
> Currently {{FSNamesystem#WRITELOCK_REPORTING_THRESHOLD}} is set at 1 second.
> In a busy system a lower overhead might be desired. In other scenarios, more
> aggressive reporting might be desired. We should make the threshold
> configurable.
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