GitHub user jerryshao opened a pull request:
https://github.com/apache/spark/pull/13399
[SPARK-15620][SQL] Fix transformed dataset attributes revolve failure
## What changes were proposed in this pull request?
Join on transformed dataset has attributes conflicts, which make query
execution failure, for example:
```
val dataset = Seq(1, 2, 3).toDs
val mappedDs = dataset.map(_ + 1)
mappedDs.as("t1").joinWith(mappedDs.as("t2"), $"t1.value" ===
$"t2.value").show()
```
will throw exception:
```
org.apache.spark.sql.AnalysisException: cannot resolve '`t1.value`' given
input columns: [value];
at
org.apache.spark.sql.catalyst.analysis.package$AnalysisErrorAt.failAnalysis(package.scala:42)
at
org.apache.spark.sql.catalyst.analysis.CheckAnalysis$$anonfun$checkAnalysis$1$$anonfun$apply$2.applyOrElse(CheckAnalysis.scala:62)
at
org.apache.spark.sql.catalyst.analysis.CheckAnalysis$$anonfun$checkAnalysis$1$$anonfun$apply$2.applyOrElse(CheckAnalysis.scala:59)
at
org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$transformUp$1.apply(TreeNode.scala:287)
at
org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$transformUp$1.apply(TreeNode.scala:287)
```
## How was this patch tested?
Unit test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jerryshao/apache-spark SPARK-15620
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13399.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 #13399
----
commit 376c2a94f23bf51066d0590611bd37a3c566b2ff
Author: jerryshao <[email protected]>
Date: 2016-05-30T09:04:45Z
Fix transformed Dataset attributes resolve failure
commit 00864dbf7824479d79f2c12e361d262eeee44ecb
Author: jerryshao <[email protected]>
Date: 2016-05-30T10:59:53Z
Style fix
----
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