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https://issues.apache.org/jira/browse/BOOKKEEPER-649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747562#comment-13747562
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Ivan Kelly commented on BOOKKEEPER-649:
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Committed r1516465 to trunk.
> Race condition in sync ZKUtils.createFullPathOptimistic()
> ---------------------------------------------------------
>
> Key: BOOKKEEPER-649
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-649
> Project: Bookkeeper
> Issue Type: Bug
> Reporter: Matteo Merli
> Assignee: Matteo Merli
> Priority: Trivial
> Fix For: 4.2.2, 4.3.0
>
> Attachments:
> 0001-BOOKKEEPER-649-Race-condition-in-sync-ZKUtils.create.patch,
> 0001-BOOKKEEPER-649-Race-condition-in-sync-ZKUtils.create.patch,
> 0002-BOOKKEEPER-649.patch, 0002-BOOKKEEPER-649.patch,
> TEST-org.apache.bookkeeper.replication.TestLedgerUnderreplicationManager.xml
>
>
> If multiple threads are calling createFullPathOptimistic() there will be race
> conditions on creating the intermediate nodes. If the intermediate nodes have
> been created since we last check, we can just ignore the exception and
> continue creating the child nodes.
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