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https://issues.apache.org/jira/browse/OAK-4201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15370894#comment-15370894
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Alex Parvulescu commented on OAK-4201:
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Looks good to me +1
> 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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