GitHub user peter-toth opened a pull request:
https://github.com/apache/spark/pull/22789
[SPARK-25767][SQL] fix inputVars preparation if outputVars is a lazy stream
## What changes were proposed in this pull request?
Code generation is incorrect if `outputVars` parameter of `consume` method
in `CodegenSupport` contains a lazy evaluated stream of expressions.
This PR fixes the issue by forcing the evaluation of `inputVars` before
generating the code for UnsafeRow.
## How was this patch tested?
Tested with the sample program provided in
https://issues.apache.org/jira/browse/SPARK-25767
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/peter-toth/spark SPARK-25767
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22789.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 #22789
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commit 2ca1795da0af56021e7002bcae8ed8545eb72b6d
Author: Peter Toth <peter.toth@...>
Date: 2018-10-21T20:53:08Z
[SPARK-25767][SQL] fix inputVars preparation if outputVars is a lazy stream
Change-Id: Iac584a018f9892367841357c667ccaec1c15047b
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