[jira] [Comment Edited] (OAK-3588) SegmentNodeStore allow tweaking of lock fairness

["Alex Parvulescu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-3588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14991741#comment-14991741 ] 

Alex Parvulescu edited comment on OAK-3588 at 11/5/15 4:36 PM:
---------------------------------------------------------------

* patch applied on trunk http://svn.apache.org/viewvc?rev=1712785&view=rev
* merged to 1.2 http://svn.apache.org/viewvc?rev=1712811&view=rev
* merged to 1.0 http://svn.apache.org/viewvc?rev=1712812&view=rev


was (Author: alex.parvulescu):
patch applied on trunk http://svn.apache.org/viewvc?rev=1712785&view=rev
backporting tbd

> SegmentNodeStore allow tweaking of lock fairness
> ------------------------------------------------
>
>                 Key: OAK-3588
>                 URL: https://issues.apache.org/jira/browse/OAK-3588
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segmentmk
>            Reporter: Alex Parvulescu
>            Assignee: Alex Parvulescu
>             Fix For: 1.3.10, 1.2.8, 1.0.24
>
>         Attachments: OAK-3588.patch
>
>
> This will expose the merge semaphores's fairness policy as the semaphore is currently configured as _NonfairSync_ (default value).
> Opening this option will be beneficial in collecting more stats around thread starvation and what the best policy is (fair vs non fair).



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