GitHub user robbinspg opened a pull request:
https://github.com/apache/spark/pull/13707
[SPARK-15822][SQL] avoid UTF8String references into freed pages
## What changes were proposed in this pull request?
In SMJ codegen we need to save copies of UTF8String values as the final
iterator.next() will free the underlying memory page.
## How was this patch tested?
Test application as described in 15822 now passes.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/robbinspg/spark-1 master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13707.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 #13707
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commit d201034e628456b9640eb8483da849217aa80c92
Author: Pete Robbins <robbin...@gmail.com>
Date: 2016-06-16T14:33:31Z
Create copy of UTF8String in SMJ
commit 1288f1e88f90b751cd0640864d7cc6cb5a9dfeca
Author: Pete Robbins <robbin...@gmail.com>
Date: 2016-06-16T15:21:23Z
make copy() public
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