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From "Jim Kellerman (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-451) Remove HTableDescriptor from HRegionInfo
Date Fri, 15 Feb 2008 01:17:07 GMT
Remove HTableDescriptor from HRegionInfo

                 Key: HBASE-451
                 URL: https://issues.apache.org/jira/browse/HBASE-451
             Project: Hadoop HBase
          Issue Type: Improvement
    Affects Versions: 0.2.0
            Reporter: Jim Kellerman
            Priority: Minor

There is an HRegionInfo for every region in HBase. Currently HRegionInfo also contains the
HTableDescriptor (the schema). That means we store the schema n times where n is the number
of regions in the table.

Additionally, for every region of the same table that the region server has open, there is
a copy of the schema. Thus it is stored in memory once for each open region.

If HRegionInfo merely contained the table name the HTableDescriptor could be stored in a separate
file and easily found.

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