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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Commented] (OAK-7416) Contribute a 'proc' subtree for the Segment Node Store
Date Tue, 17 Apr 2018 07:38:00 GMT

    [ https://issues.apache.org/jira/browse/OAK-7416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16440531#comment-16440531
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Michael Dürig commented on OAK-7416:
------------------------------------

[~frm] from my perspective as a user of this feature via [https://github.com/mduerig/oak-tooling-api/commits/proc]
and [https://github.com/mduerig/script-oak/commits/proc] this is tremendously useful. It eases
a lot of the pain described in OAK-6584. IMO we should 
 * care fully review your branch
 * contribute it to Oak trunk
 * resolve OAK-6584 as superseded by this issue.

Will follow up with a more detailed review of your branch later today.

> Contribute a 'proc' subtree for the Segment Node Store
> ------------------------------------------------------
>
>                 Key: OAK-7416
>                 URL: https://issues.apache.org/jira/browse/OAK-7416
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>            Reporter: Francesco Mari
>            Assignee: Francesco Mari
>            Priority: Major
>             Fix For: 1.10
>
>
> With guidance from [~mduerig], I recently developed a way to expose Segment Node Store's
internal information through the NodeState API. 
> The concept is similar in spirit to the proc file system in Linux: the proc subtree exposes
internal information in a straightforward manner, enabling consumers to rely on a well-understood
API to access the data. This proc subtree shelters tooling from variations of the internal
APIs of the Segment Store. As long as the data exported through the proc subtree is stable,
the same tools are going to work across different versions of the Segment Store with minimal
to no modifications.
> The proc subtree has been developed in [this branch on GitHub|https://github.com/francescomari/jackrabbit-oak/tree/proc].
I created this issue in order to review the work done so far, and to track the contribution
of the proc subtree in Oak.



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