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Posted to commits@cayenne.apache.org by "Nikita Timofeev (JIRA)" <ji...@apache.org> on 2018/07/30 07:53:00 UTC

[jira] [Closed] (CAY-2446) Run Disjoint By Id queries outside of synchronized block

     [ https://issues.apache.org/jira/browse/CAY-2446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nikita Timofeev closed CAY-2446.
--------------------------------
    Resolution: Fixed

https://github.com/apache/cayenne/commit/8339c19959aa9bc6e0e05b1536af5622b13ae670

> Run Disjoint By Id queries outside of synchronized block
> --------------------------------------------------------
>
>                 Key: CAY-2446
>                 URL: https://issues.apache.org/jira/browse/CAY-2446
>             Project: Cayenne
>          Issue Type: Improvement
>          Components: Core Library
>            Reporter: Nikita Timofeev
>            Assignee: Nikita Timofeev
>            Priority: Major
>             Fix For: 4.1.M3
>
>
> While researching lock contention in read-only mode I found that queries that are run for {{DisjoinById}} prefetches inside context-wide lock on {{ObjectStore}}. This can lead in really huge lock contention between threads concurrently reading from same context.
>  



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