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https://issues.apache.org/jira/browse/PHOENIX-4214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16181546#comment-16181546
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Hudson commented on PHOENIX-4214:
---------------------------------
FAILURE: Integrated in Jenkins build Phoenix-master #1811 (See
[https://builds.apache.org/job/Phoenix-master/1811/])
PHOENIX-4214 Scans which write should not block region split or close (jtaylor:
rev 5d9572736a991f19121477a0822d4b8bf26b4c69)
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/coprocessor/UngroupedAggregateRegionObserver.java
* (edit)
phoenix-core/src/it/java/org/apache/phoenix/execute/UpsertSelectOverlappingBatchesIT.java
> Scans which write should not block region split or close
> --------------------------------------------------------
>
> Key: PHOENIX-4214
> URL: https://issues.apache.org/jira/browse/PHOENIX-4214
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.12.0
> Reporter: Vincent Poon
> Assignee: Vincent Poon
> Attachments: PHOENIX-4214-4.x-HBase-0.98_v1.patch,
> PHOENIX-4214.master.v1.patch, splitDuringUpsertSelect_wip.patch
>
>
> PHOENIX-3111 introduced a scan reference counter which is checked during
> region preSplit and preClose. However, a steady stream of UPSERT SELECT or
> DELETE can keep the count above 0 indefinitely, preventing or greatly
> delaying a region split or close.
> We should try to avoid starvation of the split / close request, and
> fail/reject queries where appropriate.
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