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From "Russell Melick (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-1644) use filter pushdown for automatically accessing indexes
Date Sat, 30 Apr 2011 03:56:03 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13027283#comment-13027283
] 

Russell Melick commented on HIVE-1644:
--------------------------------------

I can send it back out of the index handler, and that seems to function correctly.
{{{
      if (newInputPaths.length() == 0) {
        return super.getSplits(job, numSplits);
      } else {
        FileInputFormat.setInputPaths(job, newInputPaths.toString());
      }
}}}
But, this means that we won't use the index to get the splits, so I don't think our test will
work anymore.  It will return results from the base table.  This feels like the correct behavior
in the long term, even though it breaks the test.

> 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: 0.8.0
>            Reporter: John Sichi
>            Assignee: Russell Melick
>         Attachments: HIVE-1644.1.patch, HIVE-1644.10.patch, HIVE-1644.11.patch, HIVE-1644.12.patch,
HIVE-1644.13.patch, HIVE-1644.14.patch, HIVE-1644.15.patch, HIVE-1644.16.patch, HIVE-1644.17.patch,
HIVE-1644.18.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.log
>
>
> 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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