GitHub user sitalkedia opened a pull request:
https://github.com/apache/spark/pull/15064
[SPARK-17509]]When wrapping catalyst datatype to Hive data type avoidâ¦
## What changes were proposed in this pull request?
When wrapping catalyst datatypes to Hive data type, wrap function was doing
an expensive pattern matching which was consuming around 11% of cpu time. Avoid
the pattern matching by returning the wrapper only once and reuse it.
## How was this patch tested?
Tested by running the job on cluster and saw around 8% cpu improvements.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sitalkedia/spark skedia/hive_wrapper
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15064.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 #15064
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commit 19a2d96c4be9af363c2f5deb54e4a83b541a03f3
Author: Sital Kedia <ske...@fb.com>
Date: 2016-09-12T18:57:53Z
[SPARK-17509]]When wrapping catalyst datatype to Hive data type avoid
pattern matching
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