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Ted Yu commented on HBASE-451: ------------------------------ I tried creating review myself with 451_support_for_removing_HTD_from_HRI_trunk.txt I got: The file '/src/test/java/org/apache/hadoop/hbase/client/TestMetaMigration.java' could not be found in the repository > Remove HTableDescriptor from HRegionInfo > ---------------------------------------- > > Key: HBASE-451 > URL: https://issues.apache.org/jira/browse/HBASE-451 > Project: HBase > Issue Type: Improvement > Components: master, regionserver > Affects Versions: 0.2.0 > Reporter: Jim Kellerman > Assignee: Subbu M Iyer > Priority: Critical > Fix For: 0.92.0 > > Attachments: 451_support_for_removing_HTD_from_HRI_trunk.txt, > HBASE-451_-_First_draft_support_for_removing_HTD_from_HRI1.patch > > > 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. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira