Revision 636589

HBASE-27 hregioninfo cell empty in meta table

Summary of changes:

HMaster:

- When a row has an empty HRegionInfo (info:regioninfo), log it with the row name and and the other keys still in the row.

- Log the number of rows with empty HRegionInfo

- Delete the rows

- Make RowMap inner class static, change methods to have package scope to avoid synthetic accessors.

- Provide row name to getHRegionInfo so it can issue better log messages

- add method deleteEmptyMetaRows to remove rows with empty HRegionInfo

HRegion

- change removeRegionFromMETA to use deleteAll rather than using a BatchUpdate containing deletes for each cell.

TestEmptyMetaInfo

- new test case