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https://issues.apache.org/jira/browse/HBASE-22658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16892913#comment-16892913
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Reid Chan commented on HBASE-22658:
-----------------------------------
Attached two pics, with_patch and without patch.
The env is, rsgroup 'a' contains only two servers (13 and 16) and two tables
which don't matter. With-patch one worked as expectation, but the without-patch
one, region movers moved target regions to whole cluster which violates the
table's rsgroup constraints.
Didn't encounter any exception, at least 10 tests.
FYI sir, [~apurtell]
> region_mover.rb should choose same rsgroup servers as target servers
> ----------------------------------------------------------------------
>
> Key: HBASE-22658
> URL: https://issues.apache.org/jira/browse/HBASE-22658
> Project: HBase
> Issue Type: Improvement
> Components: rsgroup, shell
> Affects Versions: 1.4.10
> Reporter: liang.feng
> Priority: Major
> Labels: gracefulshutdown, region_mover, rsgroup
> Attachments: HBASE-22658.branch-1.002.patch,
> HBASE-22658.branch-1.patch, with_patch.png, without_patch.png
>
>
> There are many retries when i am using graceful_stop.sh to shutdown region
> server after using regroup, because the target server in a different rsgroup.
> This makes it slow to graceful shutdown a regionserver. So i think that
> region_mover.rb should only choose same rsgroup servers as target servers.
> Region mover is implemented by jruby in hbase1.x and is implemented by java
> in hbase2.x . I tried to modify the RegionMover.java class to use the same
> logic in hbase2.x, but mvn package failed due to hbase-server module and
> hbase-rsgroup moudle needed to depend on each other, then maven throw a "The
> projects in the reactor contain a cyclic reference". I couldn't solve it.So I
> just uploaded patch for hbase1.x .
>
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