Nick Burkard created FLINK-20845:
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Summary: Drop support for Scala 2.11
Key: FLINK-20845
URL: https://issues.apache.org/jira/browse/FLINK-20845
Project: Flink
Issue Type: Sub-task
Components: API / Scala
Reporter: Nick Burkard
The first step to adding support for Scala 2.13 is to drop Scala 2.11.
Community discussion can be found
[here|https://lists.apache.org/thread.html/ra817c5b54e3de48d80e5b4e0ae67941d387ee25cf9779f5ae37d0486%40%3Cdev.flink.apache.org%3E].
* Scala 2.11 was released in November 2017 and is quite old now. Most
open-source libraries no longer build for it.
* Upgrading libraries to support 2.13 will be much easier without 2.11. Many do
not support 2.11, 2.12 and 2.13 at the same time, so this is basically required
to get 2.13 support.
Considerations:
* The Flink Scala Shell submodule still does not support Scala 2.12. It isn't a
strict dependency for dropping Scala 2.11, but would be nice to have before
making the cut.
* Stateful functions previously needed Scala 2.11, but it looks like it [now
supports 2.12|https://github.com/apache/flink-statefun/pull/149].
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