GitHub user marmbrus opened a pull request:
https://github.com/apache/spark/pull/3674
[SPARK-4827][SQL] Fix resolution of deeply nested Project(attr,
Project(Star,...)).
Since `AttributeReference` resolution and `*` expansion are currently in
separate rules, each pair requires a full iteration instead of being able to
resolve in a single pass. Since its pretty easy to construct queries that have
many of these in a row, I combine them into a single rule in this PR.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/marmbrus/spark projectStars
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/3674.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 #3674
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commit d83d6a150d85bc9033742256c518e08770296371
Author: Michael Armbrust <[email protected]>
Date: 2014-12-11T07:18:38Z
Fix resolution of deeply nested Project(attr, Project(Star,...)).
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