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[jira] [Created] (HBASE-20613) Limiting region count results in large size regions

Biju Nair created HBASE-20613:

             Summary: Limiting region count results in large size regions
                 Key: HBASE-20613
             Project: HBase
          Issue Type: Bug
          Components: regionserver
            Reporter: Biju Nair

Restricting the total number of regions in a {{namespace}}, results in large regions. Not sure whether it is by design i.e. restrict the number of region even if the region sizes grow large. Steps to recreate.
 - Create a namespace with restriction on the number of regions

create_namespace 'ns2', {'hbase.namespace.quota.maxtables'=>'2','hbase.namespace.quota.maxregions'=>'5'}{noformat}

 - Create a table and run {{PE}} to load data. The table can be created with a small _hbase_._hregion_._max_._filesize_
 - After 5 regions, the region size grows beyond _hbase_._hregion_._max_._filesize._ Since the region count restriction prevents splits, the region size grows

Will it be better to gracefully error out when regions can't be split? 

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