GitHub user dbtsai opened a pull request:
https://github.com/apache/spark/pull/22967
[SPARK-25956] Make Scala 2.12 as default Scala version in Spark 3.0
## What changes were proposed in this pull request?
This PR makes Spark's default Scala version as 2.12, and Scala 2.11 will be
the alternative version. This implies that Scala 2.12 will be used by our CI
builds including pull request builds.
We'll update the Jenkins to include a new compile-only jobs for Scala 2.11
to ensure the code can be still compiled with Scala 2.11.
## How was this patch tested?
existing tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dbtsai/spark scala2.12
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22967.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 #22967
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commit 635e6e23c5066018fd656738c51d02df8130585e
Author: DB Tsai <d_tsai@...>
Date: 2018-11-06T22:13:11Z
make scala 2.12 as default
commit 5011dc07c6462e7f5a9974a0b9b28f937d678297
Author: DB Tsai <d_tsai@...>
Date: 2018-11-06T23:11:34Z
sbt change
commit b4b9cb95df35b754432fb74361c32f563d1661b0
Author: DB Tsai <d_tsai@...>
Date: 2018-11-07T00:02:22Z
address feedback
commit 292adb111750cfe98593f12f64ebe11067482b44
Author: DB Tsai <d_tsai@...>
Date: 2018-11-07T00:35:58Z
address feedback
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