GitHub user hvanhovell opened a pull request:
https://github.com/apache/spark/pull/10553
[SPARK-12421][SQL] Prevent Internal/External row from exposing state.
It is currently possible to change the values of the supposedly immutable
```GenericRow``` and ```GenericInternalRow``` classes. This is caused by the
fact that scala's ArrayOps ```toArray``` will return the backing array instead
of a copy. This PR fixes this problem.
This PR was inspired by https://github.com/apache/spark/pull/10374 by @apo1.
cc @apo1 @sarutak @marmbrus @cloud-fan @nongli (everyone in the previous
conversation).
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hvanhovell/spark SPARK-12421
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10553.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 #10553
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commit 632b5dc202cce7ec7e2826018e06d120a4cd33d1
Author: Herman van Hovell <[email protected]>
Date: 2016-01-02T11:34:05Z
Prevent leaking state from internal/external row.
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