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https://issues.apache.org/jira/browse/PHOENIX-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14060945#comment-14060945
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Jesse Yates commented on PHOENIX-938:
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So what happens when we run this on 0.98.3? Current version supports running on
both 0.98.3 and .4... I'd like to keep that compatibility if we can, but
missing the .3 point version isn't the end of the world... thoughts?
> Use higher priority queue for index updates to prevent deadlock
> ---------------------------------------------------------------
>
> Key: PHOENIX-938
> URL: https://issues.apache.org/jira/browse/PHOENIX-938
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.0.0, 4.1
> Reporter: James Taylor
> Assignee: Jesse Yates
> Fix For: 5.0.0, 4.1
>
> Attachments: PHOENIX-938-master-v3.patch, phoenix-938-4.0-v0.patch,
> phoenix-938-master-v0.patch, phoenix-938-master-v1.patch,
> phoenix-938-master-v2.patch
>
>
> With our current global secondary indexing solution, a batched Put of table
> data causes a RS to do a batch Put to other RSs. This has the potential to
> lead to a deadlock if all RS are overloaded and unable to process the pending
> batched Put. To prevent this, we should use a higher priority queue to submit
> these Puts so that they're always processed before other Puts. This will
> prevent the potential for a deadlock under high load. Note that this will
> likely require some HBase 0.98 code changes and would not be feasible to
> implement for HBase 0.94.
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