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https://issues.apache.org/jira/browse/OPENJPA-1545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12845998#action_12845998
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Rick Curtis commented on OPENJPA-1545:
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@Pinaki - Per the doc that was committed in 918643: "...It is highly
recommended that all Entities have a @Version field when using this property."
On second thought, I probably need to make having a version field a
requirement. The version field is used when we calculate whether or not a given
Entity is detached when there is no state manager present.
@Patrick - Sorry I missed your update before. From a high level this change can
be described as, "OpenJPA give me my POJOs back." We found that the loaded
setting does a fair amount of work validating that fields that should be loaded
actually are. I short cut that entire path and completed the minimum amount of
work to disassociate an Entity from the PersistenceContext.
http://n2.nabble.com/Extreme-performance-problems-with-OpenJPA-commit-td4497009.html
> Add new Detach processing
> -------------------------
>
> Key: OPENJPA-1545
> URL: https://issues.apache.org/jira/browse/OPENJPA-1545
> Project: OpenJPA
> Issue Type: Improvement
> Components: performance
> Affects Versions: 2.0.0-beta2
> Reporter: Rick Curtis
> Assignee: Rick Curtis
> Fix For: 2.0.0
>
> Attachments: OPENJPA-1545.patch
>
>
> There have been a number of mailing list posts where the net of the post is
> that someone doesn't want OpenJPA to detach their Entities because after the
> commit happens, then are all going to be gc'd. All of the detach processing
> ends up being a waste. I also observed this same behavior when running some
> performance tests.
> With this JIRA I'm going to add a new openjpa.DetachState configuration
> option which will enable a new, super fast, minimalistic detach approach.
> This change is targeted at detach processing that happens due to an
> AutoDetach. Explicit detaches(ie: em.detach(..) ) will work as they always
> have before.
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