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https://issues.apache.org/jira/browse/PHOENIX-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14008593#comment-14008593
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Hudson commented on PHOENIX-938:
--------------------------------
FAILURE: Integrated in Phoenix-master-hadoop2 #3 (See
[https://builds.apache.org/job/Phoenix-master-hadoop2/3/])
PHOENIX-938 Use higher priority queue for index updates to prevent deadlock
(jyates) (jtaylor: rev 748b76f09ef8f16d6d028309657d8c09ea3d7822)
*
phoenix-core/src/test/java/org/apache/hadoop/hbase/ipc/PhoenixIndexRpcSchedulerTest.java
*
phoenix-core/src/test/java/org/apache/hadoop/hbase/regionserver/PhoenixIndexRpcSchedulerFactoryTest.java
*
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/IndexQosRpcControllerFactory.java
*
phoenix-core/src/main/java/org/apache/hadoop/hbase/ipc/PhoenixIndexRpcScheduler.java
*
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/table/CoprocessorHTableFactory.java
*
phoenix-core/src/main/java/org/apache/hadoop/hbase/regionserver/PhoenixIndexRpcSchedulerFactory.java
* phoenix-core/src/it/java/org/apache/phoenix/end2end/index/IndexHandlerIT.java
> 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
> Attachments: phoenix-938-4.0-v0.patch, phoenix-938-master-v0.patch,
> phoenix-938-master-v1.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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