[jira] [Updated] (OAK-1423) SegmentMK: Add index(es) to tar file backend

["Axel Hanikel (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OAK-1423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Axel Hanikel updated OAK-1423:
------------------------------

    Description: 
The {{org.apache.jackrabbit.oak.plugins.segment.file.TarFile}} constructor reads through the whole tar file, building up an in-memory map from segment uuid to the position in the file. This is done each time the repository is started, and it takes quite a long time.

This index should be persisted somehow. See the discussion in http://oak.markmail.org/thread/dlnb2mfbbui67b75

  was:
The {{org.apache.jackrabbit.oak.plugins.segment.file.TarFile}} constructor reads through the whole tar file, building up an in-memory map from segment uuid to the position in the file. This is done each time the repository is started, and it takes quite a long time.

This index should be persisted somehow. See the discussion in http://oak.markmail.org/search/?q=#query:%20list%3Aorg.apache.jackrabbit.oak-dev+page:1+mid:dlnb2mfbbui67b75+state:results


> SegmentMK: Add index(es) to tar file backend
> --------------------------------------------
>
>                 Key: OAK-1423
>                 URL: https://issues.apache.org/jira/browse/OAK-1423
>             Project: Jackrabbit Oak
>          Issue Type: Sub-task
>          Components: segmentmk
>    Affects Versions: 0.16
>            Reporter: Axel Hanikel
>             Fix For: 0.17
>
>
> The {{org.apache.jackrabbit.oak.plugins.segment.file.TarFile}} constructor reads through the whole tar file, building up an in-memory map from segment uuid to the position in the file. This is done each time the repository is started, and it takes quite a long time.
> This index should be persisted somehow. See the discussion in http://oak.markmail.org/thread/dlnb2mfbbui67b75



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