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From "Ning Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-2049) Push down partition pruning to JDO filtering for a subset of partition predicates
Date Mon, 21 Mar 2011 23:07:05 GMT

     [ https://issues.apache.org/jira/browse/HIVE-2049?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ning Zhang updated HIVE-2049:
-----------------------------

    Attachment: HIVE-2049.4.patch

Attaching a new patch that address review comments. The review board is also updated.

> Push down partition pruning to JDO filtering for a subset of partition predicates
> ---------------------------------------------------------------------------------
>
>                 Key: HIVE-2049
>                 URL: https://issues.apache.org/jira/browse/HIVE-2049
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Ning Zhang
>            Assignee: Ning Zhang
>         Attachments: HIVE-2049.2.patch, HIVE-2049.3.patch, HIVE-2049.4.patch, HIVE-2049.patch
>
>
> 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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