GitHub user yaooqinn opened a pull request:
https://github.com/apache/spark/pull/15227
[SPARK-17655][SQL]Remove unused variables declarations and definations in a
WholeStageCodeGened stage
## What changes were proposed in this pull request?
A WholeStageCodeGened stage with multiple CodegenSupport Operators
generates unused result rows and their associated buffer holders and row
writers, which can be removed.
## How was this patch tested?
existing ut.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yaooqinn/spark rm-unused-object
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15227.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 #15227
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commit eabd4a55cbe8fd57c722396c95087a2b6c695587
Author: Kent Yao <yaooq...@hotmail.com>
Date: 2016-09-24T01:58:42Z
remove redundant variables declarations and definations
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