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From "Francesco Mari (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-4740) TarReader recovery skips generating the index and binary graphs
Date Thu, 15 Sep 2016 12:47:21 GMT

    [ https://issues.apache.org/jira/browse/OAK-4740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15493210#comment-15493210
] 

Francesco Mari commented on OAK-4740:
-------------------------------------

It looks good to me. It seems like a reasonable tradeoff between having a comprehensive binary
reference index and being able to recover the index in case of dirty shutdown.

> TarReader recovery skips generating the index and binary graphs
> ---------------------------------------------------------------
>
>                 Key: OAK-4740
>                 URL: https://issues.apache.org/jira/browse/OAK-4740
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: segment-tar
>            Reporter: Alex Parvulescu
>            Assignee: Francesco Mari
>             Fix For: Segment Tar 0.0.16
>
>
> As noticed from the tar recovery bits [0] the resulting tar file would lack the binary
reference graph and index graph. This has implications on the DSGC (not properly reporting
binary references would result in binaries being GC'ed) and GC operations.
> / cc [~frm], [~mduerig]
> [0] https://github.com/apache/jackrabbit-oak/blob/trunk/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/file/TarReader.java#L216



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