GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/2592
[SQL] Prevents per row dynamic dispatching and pattern matching when
inserting Hive values
Builds all wrappers at first according to object inspector types to avoid
per row costs.
TODO:
- [ ] Micro benchmark
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark hive-value-wrapper
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2592.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 #2592
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commit 499866606d079c30bae50d799bbe1ba1488ec343
Author: Cheng Lian <[email protected]>
Date: 2014-09-30T06:55:09Z
Prevents per row dynamic dispatching and pattern matching when inserting
Hive values
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