GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/23118
[SPARK-26144][BUILD] `build/mvn` should detect `scala.version` based on
`scala.binary.version`
## What changes were proposed in this pull request?
Currently, `build/mvn` downloads and uses **Scala 2.12.7** in `Scala-2.11`
Jenkins job. The root cause is `build/mvn` got the first match from `pom.xml`
blindly.
-
https://amplab.cs.berkeley.edu/jenkins/view/Spark%20QA%20Test%20(Dashboard)/job/spark-master-test-maven-hadoop-2.7-ubuntu-scala-2.11/6/consoleFull
```
exec: curl -s -L https://downloads.lightbend.com/zinc/0.3.15/zinc-0.3.15.tgz
exec: curl -s -L
https://downloads.lightbend.com/scala/2.12.7/scala-2.12.7.tgz
exec: curl -s -L
https://www.apache.org/dyn/closer.lua?action=download&filename=/maven/maven-3/3.5.4/binaries/apache-maven-3.5.4-bin.tar.gz
```
## How was this patch tested?
Manual.
```
$ build/mvn clean
exec: curl --progress-bar -L
https://downloads.lightbend.com/scala/2.12.7/scala-2.12.7.tgz
...
$ dev/change-scala-version.sh 2.11
$ build/mvn clean
exec: curl --progress-bar -L
https://downloads.lightbend.com/scala/2.11.12/scala-2.11.12.tgz
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-26144
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/23118.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 #23118
----
commit f4f51af9fbc8b756ebd33e1be7e73cc62bfe081f
Author: Dongjoon Hyun <dongjoon@...>
Date: 2018-11-22T08:45:46Z
[SPARK-26144][BUILD] `build/mvn` should detect `scala.version` based on
`scala.binary.version`
----
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