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From "Andrei Dulceanu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-4097) Add metric for FileStore journal writes
Date Tue, 09 Aug 2016 08:04:20 GMT

     [ https://issues.apache.org/jira/browse/OAK-4097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrei Dulceanu updated OAK-4097:
---------------------------------
    Attachment: OAK-4097-03.patch

[~mduerig] I followed your advice regarding manually calling {{FileStore.flush()}} and converted
my IT scenario into a plain unit test in {{FileStoreStatsTest}}, patch attached. 

If you are ok with the approach, I think we can finally close this one. Thanks!

> 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 0.0.10
>
>         Attachments: OAK-4097-01.patch, OAK-4097-02.patch, OAK-4097-03.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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