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https://issues.apache.org/jira/browse/OFBIZ-3557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917198#action_12917198
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Adrian Crum commented on OFBIZ-3557:
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Aleksey,
Instead of a named lock, couldn't you call the individual ID generation methods
from a single method and then synchronize that method? It seems to me it would
have the same effect as a named lock.
> Enforced sequence does not work with concurrent access
> ------------------------------------------------------
>
> Key: OFBIZ-3557
> URL: https://issues.apache.org/jira/browse/OFBIZ-3557
> Project: OFBiz
> Issue Type: Bug
> Components: framework
> Affects Versions: Release Branch 09.04, SVN trunk
> Reporter: Wickersheimer Jeremy
> Attachments: OFBIZ-3557-1.patch, OFBIZ-3557-2.patch
>
>
> There is a fundamental issue with enforced sequences (for orders, invoices,
> etc ..) and concurrency.
> For example if two users are creating an order at the same time one of them
> will see the creation fail with a PK error. The problem is that the
> "getNextXXXId" rely on the party accounting preference entity, but there is
> absolutely no guarantee that the last number in the sequence gets updated
> before another service can read it.
> This is at best very annoying when used only internally but may be
> unpractical for e-commerce sites.
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