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Posted to dev@hive.apache.org by "Russell Melick (JIRA)" <ji...@apache.org> on 2011/03/21 07:48:05 UTC
[jira] [Updated] (HIVE-1644) use filter pushdown for automatically
accessing indexes
[ https://issues.apache.org/jira/browse/HIVE-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Russell Melick updated HIVE-1644:
---------------------------------
Attachment: HIVE-1644.9.patch
HIVE-1644.9.patch
Added task relabeling to the addDependentTask method in Task.java. It still seems like we're generating our re-entrant index query twice. Yonqiang, I think we end up calling IndexWhereTaskDispatcher.dispatch twice as often as we want, which causes us to process the operator tree twice.
> use filter pushdown for automatically accessing indexes
> -------------------------------------------------------
>
> Key: HIVE-1644
> URL: https://issues.apache.org/jira/browse/HIVE-1644
> Project: Hive
> Issue Type: Improvement
> Components: Indexing
> Affects Versions: 0.7.0
> Reporter: John Sichi
> Assignee: Russell Melick
> Attachments: HIVE-1644.1.patch, HIVE-1644.2.patch, HIVE-1644.3.patch, HIVE-1644.4.patch, HIVE-1644.5.patch, HIVE-1644.6.patch, HIVE-1644.7.patch, HIVE-1644.8.patch, HIVE-1644.9.patch
>
>
> HIVE-1226 provides utilities for analyzing filters which have been pushed down to a table scan. The next step is to use these for selecting available indexes and generating access plans for those indexes.
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