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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15843) Replace RegionState.getRegionInTransition() Map with a Set
Date Tue, 17 May 2016 02:55:12 GMT
Matteo Bertozzi created HBASE-15843:

             Summary: Replace RegionState.getRegionInTransition() Map with a Set
                 Key: HBASE-15843
                 URL: https://issues.apache.org/jira/browse/HBASE-15843
             Project: HBase
          Issue Type: Improvement
          Components: master, Region Assignment
    Affects Versions: 1.2.1, 2.0.0, 1.3.0
            Reporter: Matteo Bertozzi
            Assignee: Matteo Bertozzi
            Priority: Trivial
             Fix For: 2.0.0

RegionState.getRegionInTransition() is always used as a Set.
replace the Map with a Set, avoid some allocation and extra code.

also ClusterStatus.RegionInTransition has duplicated information.
The spec field contains the regionName (not encoded). 
but we have the same info as part of the region_state with the HRegionInfo serialized.
unfortunately I don't think we can get rid of 'spec' that being a required field.
message RegionInTransition {
  required RegionSpecifier spec = 1;
  required RegionState region_state = 2;

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