GitHub user mgaido91 opened a pull request:
https://github.com/apache/spark/pull/19914
[SPARK-22699][SQL] GenerateSafeProjection should not use global variables
for struct
## What changes were proposed in this pull request?
GenerateSafeProjection is defining a mutable state for each struct, which
is not needed. This is bad for the well known issues related to constant pool
limits.
The PR replace the global variable with a local one.
## How was this patch tested?
added UT
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mgaido91/spark SPARK-22699
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19914.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 #19914
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commit 6d2ce8e411e3bfe5aa12dd351c29f247caf1ffe5
Author: Marco Gaido <[email protected]>
Date: 2017-12-06T18:17:28Z
[SPARK-22699][SQL] GenerateSafeProjection should not use global variables
for struct
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