GitHub user sun-rui opened a pull request:
https://github.com/apache/spark/pull/12575
[SPARK-14803][SQL][Optimizer] A bug in EliminateSerialization rule in
Catalyst Optimizer.
## What changes were proposed in this pull request?
This PR fixes a bug in EliminateSerialization rule in Catalyst Optimizer.
When there is a SerializeFromObject and DeserializeToObject pair with equal
inputObjectType and outputObjectType, the pair will be eliminated and replaced
by a Project operator. However, when the involved object type is Row, there
will be a codegen compilation error, because UnsafeProjection does not support
Row.
## How was this patch tested?
Unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sun-rui/spark SPARK-14803
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12575.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 #12575
----
commit cf11a759d524cb7c0313f397e6188de621a22c1e
Author: Sun Rui <rui....@intel.com>
Date: 2016-04-21T13:10:36Z
[SPARK-14803][SQL][Optimizer] A bug in EliminateSerialization rule in
Catalyst Optimizer.
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