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https://issues.apache.org/jira/browse/OAK-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcel Reutegger resolved OAK-2127.
-----------------------------------
Resolution: Fixed
Fix Version/s: 1.1
Relaxed merge locking with an upper time limit to acquire the lock for the
DocumentNodeStore in http://svn.apache.org/r1627346
> Long running merge may block other commits
> ------------------------------------------
>
> Key: OAK-2127
> URL: https://issues.apache.org/jira/browse/OAK-2127
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core, mongomk
> Affects Versions: 1.0
> Reporter: Marcel Reutegger
> Assignee: Marcel Reutegger
> Fix For: 1.1
>
>
> A long running merge with DocumentNodeStore may block other commits when
> there are merge conflicts and a merge is retried.
> The DocumentNodeStore currently acquires a shared lock when it performs a
> merge. This allows concurrent merges. A merge is retried if it fails with a
> conflict and at some point will acquire above mentioned lock exclusively.
> This way, merges are serialized and an attempt is made to prevent conflicts
> introduced by concurrent merges.
> The lock becomes problematic when a long running merge hold this lock
> exclusively. All other commits are then basically blocked.
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