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https://issues.apache.org/jira/browse/OAK-4097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15406126#comment-15406126
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Michael Dürig commented on OAK-4097:
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+1 for the patch from my side.
[~chetanm], could you give the metrics API specific parts a quick review. Feel
free to apply it.
> 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: segment-tar
> Reporter: Chetan Mehrotra
> Assignee: Andrei Dulceanu
> Priority: Minor
> Fix For: Segment Tar 1.0.0
>
> Attachments: OAK-4097-01.patch
>
>
> 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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