Hi everyone,
since Flink 1.9 we have supported two SQL planners. Most of the original
plan of FLIP-32 [1] has been implemented. The Blink code merge has been
completed and many additional features have been added exclusively to
the new planner. The new planner is now in a much better shape than the
legacy one.
In order to avoid user confusion, reduce duplicate code, and improve
maintainability and testing times of the Flink project as a whole we
would like to propose the following steps to complete FLIP-32:
In Flink 1.13:
- Deprecate the `flink-table-planner` module
- Deprecate `BatchTableEnvironment` for both Java, Scala, and Python
In Flink 1.14:
- Drop `flink-table-planner` early
- Drop many deprecated interfaces and API on demand
- Rename `flink-table-planner-blink` to `flink-table-planner`
- Rename `flink-table-runtime-blink` to `flink-table-runtime`
- Remove references of "Blink" in the code base
This will have an impact on users that still use DataSet API together
with Table API. With this change we will not support converting between
DataSet API and Table API anymore. We hope to compensate the missing
functionality in the new unified TableEnvironment and/or the batch mode
in DataStream API during 1.14 and 1.15. For this, we are looking for
further feedback which features are required in Table API/DataStream API
to have a smooth migration path.
Looking forward to your feedback.
Regards,
Timo
[1]
https://cwiki.apache.org/confluence/display/FLINK/FLIP-32%3A+Restructure+flink-table+for+future+contributions
