GitHub user kevinyu98 opened a pull request:
https://github.com/apache/spark/pull/22918
[SPARK-25902][SQL]Change AttributeReference.withMetadata's return type to
AttributeReference
## What changes were proposed in this pull request?
Currently the `AttributeReference.withMetadata` method have return type
`Attribute,` the rest of with methods in the `AttributeReference` return type
are `AttributeReference`, as the
[spark-25902](https://issues.apache.org/jira/browse/SPARK-25892?jql=project%20%3D%20SPARK%20AND%20component%20in%20(ML%2C%20PySpark%2C%20SQL))
mentioned.
## How was this patch tested?
Run all `sql/test,` `catalyst/test` and
`org.apache.spark.sql.execution.streaming.*`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kevinyu98/spark spark-25892
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22918.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 #22918
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commit 7aa2e9f9113ace0106ed1de31bad5997d600f03b
Author: Kevin Yu <qyu@...>
Date: 2018-10-31T22:40:04Z
return AttributeReference type for AttributeReference.withMetadata
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