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https://issues.apache.org/jira/browse/HBASE-13316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14384624#comment-14384624
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Hudson commented on HBASE-13316:
--------------------------------
FAILURE: Integrated in HBase-TRUNK #6311 (See
[https://builds.apache.org/job/HBase-TRUNK/6311/])
HBASE-13316 Reduce the downtime on planned moves of regions (eclark: rev
ba6345f7d15d540943825a2b6f2d2c2177ad1c8c)
*
hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestWarmupRegion.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
* hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ProtobufUtil.java
* hbase-protocol/src/main/protobuf/Admin.proto
* hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
*
hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/RequestConverter.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
*
hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/AdminProtos.java
*
hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
> Reduce the downtime on planned moves of regions
> -----------------------------------------------
>
> Key: HBASE-13316
> URL: https://issues.apache.org/jira/browse/HBASE-13316
> Project: HBase
> Issue Type: Improvement
> Components: Balancer
> Affects Versions: 2.0.0, 1.0.1, 1.1.1
> Reporter: Sameet Agarwal
> Assignee: Sameet Agarwal
> Priority: Minor
> Fix For: 2.0.0, 1.1.0
>
> Attachments: PlannedFailover-v1.patch, PlannedFailover-v2.patch,
> PlannedFailover-v3.patch, PlannedFailover.patch
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> The current behavior of a region move shuts down a region and then starts is
> up in another regionserver. This causes increased latency and possibly
> timeouts till the new region's cache is fully warmed up. We can make a region
> move less disruptive by warming the cache in the destination region server
> before shutting dow the old region.
>
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