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From "Ning Zhang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-2049) Push down partition pruning to JDO filtering for a subset of partition predicates
Date Fri, 11 Mar 2011 20:26:59 GMT
Push down partition pruning to JDO filtering for a subset of partition predicates
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                 Key: HIVE-2049
                 URL: https://issues.apache.org/jira/browse/HIVE-2049
             Project: Hive
          Issue Type: Sub-task
            Reporter: Ning Zhang
            Assignee: Ning Zhang


Several tasks:
  - expose HiveMetaStoreClient.listPartitionsByFilter() to Hive.java so that PartitionPruner
can use that for certain partition predicates. 
  - figure out a safe subset of partition predicates that can be pushed down to JDO filtering.


By my initial testing for the 2nd part is equality queries with AND/OR can be pushed down
and return correct results. However range queries on partition columns gave NPE by the JDO
execute() function. This might be a bug in the JDO query string itself, but we need to figure
it out and heavily test all cases. 


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