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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "Hive/ViewDev" by JohnSichi
Date Tue, 22 Dec 2009 01:06:53 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The "Hive/ViewDev" page has been changed by JohnSichi.
http://wiki.apache.org/hadoop/Hive/ViewDev?action=diff&rev1=4&rev2=5

--------------------------------------------------

  Comparison of the two approaches:
  
  || || '''Inheritance Model''' || '''Flat Model''' ||
- || ''JDO Support''' || Need to investigate how well inheritance works for our purposes ||
Nothing special ||
+ || ''JDO Support''|| Need to investigate how well inheritance works for our purposes ||
Nothing special ||
  || ''Metadata queries from existing code/tools'' || Existing queries for tables will NOT
include views in results; those that need to will have to be modified to reference base class
instead || Existing queries for tables WILL include views in results; those that are not supposed
to will need to filter them out ||
  || ''Metastore upgrade on deployment'' || Need to test carefully to make sure introducing
inheritance doesn't corrupt existing metastore instances || Nothing special, just adding a
new attribute ||
  

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