GitHub user sudheeshkatkam opened a pull request:
https://github.com/apache/drill/pull/197
DRILL-3921: Initialize the underlying record reader lazily in HiveRecâ¦
â¦ordReader
@vkorukanti and @jacques-n can you please take a look. I need to add unit
tests.
For my setup with 20K files, LIMIT 1 query now takes 53 seconds (~48
seconds for planning). Previously the query took 1300 seconds (~45 seconds for
planning).
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sudheeshkatkam/drill DRILL-3921
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/197.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 #197
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commit fdca17f3c223a4f51099616e059c394c8db3974d
Author: Sudheesh Katkam <[email protected]>
Date: 2015-10-12T16:32:15Z
DRILL-3921: Initialize the underlying record reader lazily in
HiveRecordReader
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