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Posted to oak-issues@jackrabbit.apache.org by "Francesco Mari (JIRA)" <ji...@apache.org> on 2016/07/11 16:04:11 UTC

[jira] [Resolved] (OAK-4201) Add an index of binary references in a tar file

     [ https://issues.apache.org/jira/browse/OAK-4201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Francesco Mari resolved OAK-4201.
---------------------------------
    Resolution: Fixed

Fixed in r1752166.

> Add an index of binary references in a tar file
> -----------------------------------------------
>
>                 Key: OAK-4201
>                 URL: https://issues.apache.org/jira/browse/OAK-4201
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>            Reporter: Chetan Mehrotra
>            Assignee: Francesco Mari
>             Fix For: Segment Tar 0.0.4
>
>         Attachments: OAK-4201-01.patch
>
>
> Currently for  Blob GC in case of segment {{SegmentBlobReferenceRetriever}} goes through all tar files and extracts the binary references. This has 2 issues
> # Logic has go through all the segments in all tar files
> # All segments get loaded in memory once which would affect normal system performance
> This process can be optimized if we also write a file entry in tar (similar to gph i.e. graph and idx i.e. index files) which has entries of all binary references referred to in any segment present in that tar file. Then GC logic would just have read this file and avoid scanning all the segments



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