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https://issues.apache.org/jira/browse/OAK-4097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15184470#comment-15184470
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Chetan Mehrotra commented on OAK-4097:
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Such a metric can easily be hooked into
{{org.apache.jackrabbit.oak.plugins.segment.file.BackgroundThread}} which
already collects the timing data. Just need to back them via a metric
> Add metric for FileStore journal writes
> ---------------------------------------
>
> Key: OAK-4097
> URL: https://issues.apache.org/jira/browse/OAK-4097
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: segmentmk
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Priority: Minor
> Fix For: 1.6
>
>
> TarMK flush thread should run every 5 secs and flush the current root head to
> journal.log. It would be good to have a metric to capture the number of runs
> per minute
> This would help in confirming if flush is working at expected frequency or
> delay in acquiring locks is causing some delays
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