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https://issues.apache.org/jira/browse/PHOENIX-3535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15768563#comment-15768563
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Hudson commented on PHOENIX-3535:
---------------------------------
FAILURE: Integrated in Jenkins build Phoenix-master #1518 (See
[https://builds.apache.org/job/Phoenix-master/1518/])
PHOENIX-3535 Fix race condition in (samarth: rev
b5ab53d9650910c2ff3a08f30c2c6f182693a004)
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionQueryServicesImpl.java
* (edit) phoenix-core/src/it/java/org/apache/phoenix/end2end/UpgradeIT.java
> Fix race condition in ConnectionQueryServicesImpl#acquireUpgradeMutex
> ---------------------------------------------------------------------
>
> Key: PHOENIX-3535
> URL: https://issues.apache.org/jira/browse/PHOENIX-3535
> Project: Phoenix
> Issue Type: Bug
> Reporter: Samarth Jain
> Assignee: Samarth Jain
> Fix For: 4.9.1, 4.10.0
>
> Attachments: PHOENIX-3535_v1.patch, PHOENIX-3535_v2.patch
>
>
> Conversation on HBASE-17300 revealed that concurrently creating a table,
> checking for its existence and performing an operation on it is fraught with
> races. This race condition is causing
> UpgradeIT#testConcurrentUpgradeThrowsUpgradeInProgressException to fail. We
> need to figure out a way for not creating/checking existence of the
> SYSTEM.MUTEX table.
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