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https://issues.apache.org/jira/browse/HBASE-12071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14270275#comment-14270275
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Hudson commented on HBASE-12071:
--------------------------------

SUCCESS: Integrated in HBase-TRUNK #6006 (See 
[https://builds.apache.org/job/HBase-TRUNK/6006/])
HBASE-12071 Separate out thread pool for Master <-> RegionServer communication 
(Stephen Yuan Jiang) (ndimiduk: rev dde713ee4e7845a1bd272b1c318ba0af08577e4d)
* 
hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/PayloadCarryingRpcController.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcScheduler.java
* 
hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/RPCProtos.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionInfo.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/SimpleRpcSchedulerFactory.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestQosFunction.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/AnnotationReadingPriorityFunction.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestPriorityRpc.java
* hbase-protocol/src/main/protobuf/RPC.proto


> Separate out thread pool for Master <-> RegionServer communication
> ------------------------------------------------------------------
>
>                 Key: HBASE-12071
>                 URL: https://issues.apache.org/jira/browse/HBASE-12071
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0, 1.1.0
>            Reporter: Sudarshan Kadambi
>            Assignee: Stephen Yuan Jiang
>              Labels: reliablity
>             Fix For: 1.0.0, 2.0.0, 1.1.0
>
>         Attachments: 
> 0001-HBASE-12071-Separate-out-thread-pool-for-Master-Regi.patch, 
> HBASE-12071.v1-branch-1.patch, HBASE-12071.v2-master.patch, 
> HBASE-12071.v2-master.patch, HBASE-12071.v3-master.patch, 
> HBASE-12071.v4-master.patch, HBASE-12071.v5-master.patch
>
>
> Over in HBASE-12028, there is a discussion about the case of a RegionServer 
> still being alive despite all its handler threads being dead. One outcome of 
> this is that the Master is left hanging on the RS for completion of various 
> operations - such as region un-assignment when a table is disabled. Does it 
> make sense to create a separate thread pool for communication between the 
> Master and the RS? This addresses not just the case of the RPC handler 
> threads terminating but also long-running queries or co-processor executions 
> holding up master operations.



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