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From vkorukanti <...@git.apache.org>
Subject [GitHub] drill pull request: DRILL-4194: Improve the performance of metadat...
Date Tue, 15 Dec 2015 02:16:15 GMT
GitHub user vkorukanti opened a pull request:

    https://github.com/apache/drill/pull/301

    DRILL-4194: Improve the performance of metadata fetch operation in HiveScan

    + Use the stats (numRows) stored in Hive metastore whenever available to
      calculate the costs for planning purpose
    + Delay the costly operation of loading of InputSplits until needed. When
      InputSplits are loaded, cache them at query level to speedup subsequent
      access.
    
    @jinfengni, @amansinha100  Could you please review the patch?

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/vkorukanti/drill hive_lazyload

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/drill/pull/301.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #301
    
----
commit 0b8654e472bad2c76bbd84f5f9bbe0cd521a3898
Author: vkorukanti <venki.korukanti@gmail.com>
Date:   2015-12-15T00:02:55Z

    DRILL-4198: Enhance StoragePlugin interface to expose logical space rules for planning
purpose
    
    Also move Hive partition pruning rules to logical storage plugin rulesets.

commit 48520c93744f0865731a763c8447a720f80842a0
Author: vkorukanti <venki.korukanti@gmail.com>
Date:   2015-12-11T19:36:11Z

    DRILL-4194: Improve performance of the HiveScan metadata fetch operation
    
    + Use the stats (numRows) stored in Hive metastore whenever available to
      calculate the costs for planning purpose
    + Delay the costly operation of loading of InputSplits until needed. When
      InputSplits are loaded, cache them at query level to speedup subsequent
      access.

----


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