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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Updated] (OAK-3329) TarMK cleanup blocks writers
Date Wed, 23 Sep 2015 15:29:04 GMT

     [ https://issues.apache.org/jira/browse/OAK-3329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dürig updated OAK-3329:
-------------------------------
    Attachment: ignore.png

> TarMK cleanup blocks writers
> ----------------------------
>
>                 Key: OAK-3329
>                 URL: https://issues.apache.org/jira/browse/OAK-3329
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segmentmk
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: cleanup, gc
>             Fix For: 1.3.7
>
>         Attachments: OAK-3329-base.png, OAK-3329-patched.png, OAK-3329.patch, ignore.png
>
>
> TarMK cleanup exclusively locks the {{FileStore}}, which causes concurrent writers to
block until cleanup finished. Initially cleanup was expected to be reasonably fast, however
I have seen it taking dozens of minutes under certain circumstances (most likely many tar
files with many small segments, aka OAK-2896).



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