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https://issues.apache.org/jira/browse/HIVE-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Russell Melick updated HIVE-1644:
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Attachment: HIVE-1644.8.patch
HIVE-1644.8.patch
Fixed unit tests per John and Yonqiang. Cleaned up comments. Ready for
review. I still have a few questions that are probably best answered in the
review:
* When we have multiple indexes, and we get different tasks lists from
querying each index, what should we do? Right now we use all tasks
(IndexWhereProcessor.java:57)
* Is it possible to improve the regex we use so that it only matches WHERE
clauses? Right now we use FIL to get to the WHERE
(IndexWhereTaskDispatcher.java:141)
* What comparison operators should we support? Right now it's only <, >, and
=. We don't have <= or >= (CompactIndexHandler.java:272)
Should I put this into the reviewboard?
> 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-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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