[HIVE-2049] Push down partition pruning to JDO filtering for a subset of partition predicates

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.8.0
• Component/s: Metastore
• Labels: JDO PartitionPruner
• Hadoop Flags: Reviewed
• Assignee: Ning Zhang
• Reporter: Ning Zhang
• Created: 11/Mar/11 20:25
• Updated: 20/Aug/12 21:48
• Resolved: 22/Mar/11 16:33

Description

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.

Issue Links

• relates to: HIVE-2067 Add JDO filter to explain plan