GitHub user bogdanrdc opened a pull request:
https://github.com/apache/spark/pull/16875
[BACKPORT-2.1][SPARK-19512][SQL] codegen for compare structs fails #16852
## What changes were proposed in this pull request?
Set currentVars to null in GenerateOrdering.genComparisons before genCode
is called. genCode ignores INPUT_ROW if currentVars is not null and in
genComparisons we want it to use INPUT_ROW.
## How was this patch tested?
Added test with 2 queries in WholeStageCodegenSuite
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bogdanrdc/spark SPARK-19512-2.1
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16875.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 #16875
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commit f15585625389af47ebf7f80b4250e546b4d7b7e9
Author: Bogdan Raducanu <bogdan....@gmail.com>
Date: 2017-02-09T19:32:39Z
ported from master
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