GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/9806
[SPARK-11803][SQL] fix Dataset self-join
When we resolve the join operator, we may change the output of right side
if self-join is detected. So in `Dataset.joinWith`, we should resolve the join
operator first, and then get the left output and right output from it, instead
of using `left.output` and `right.output` directly.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark self-join
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9806.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 #9806
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commit 2c9f48586a1771acbfd7ac619c0148aae499169e
Author: Wenchen Fan <wenc...@databricks.com>
Date: 2015-11-18T11:36:01Z
fix Dataset self-join
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