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https://issues.apache.org/jira/browse/HDFS-271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved HDFS-271.
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Resolution: Won't Fix
I'm going to close this as Won't Fix. Sites that have large NNs will likely
deploy QJM or equiv, making this change unnecessary.
> Metrics on Secondary namenode's activity
> ----------------------------------------
>
> Key: HDFS-271
> URL: https://issues.apache.org/jira/browse/HDFS-271
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Koji Noguchi
> Priority: Minor
>
> To monitor secondary namenode's activiely, we currently rely on 'delete'
> metrics when it replays the edits.
> (HADOOP-1495)
> Requesting for new metrics that shows secondary namenode's activity.
> Maybe the size of the fsimage/edits being read and written.
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