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From "Adela Maznikar (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10109) [0.89-fb] Balance #regions/RS better when creating new table
Date Mon, 09 Dec 2013 18:34:07 GMT
Adela Maznikar created HBASE-10109:
--------------------------------------

             Summary: [0.89-fb] Balance #regions/RS better when creating new table
                 Key: HBASE-10109
                 URL: https://issues.apache.org/jira/browse/HBASE-10109
             Project: HBase
          Issue Type: Improvement
          Components: Region Assignment
    Affects Versions: 0.89-fb
            Reporter: Adela Maznikar
            Assignee: Adela Maznikar
            Priority: Minor
             Fix For: 0.89-fb


When a new table is created we place the primary locations for the regions in a round robin
fashion. Because we do this for every newly created table it is possible that some regionservers
end up with more regions than the others and if there are more tables in the cluster the difference
between a min and max #regions per RS can be larger. 
One small optimization is to sort the RS in ascending order before assigning them regions.



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