wuchong commented on a change in pull request #9362: [FLINK-13354] [docs] Add
documentation for how to use blink planner
URL: https://github.com/apache/flink/pull/9362#discussion_r310926794
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File path: docs/dev/table/common.md
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@@ -27,6 +27,18 @@ The Table API and SQL are integrated in a joint API. The
central concept of this
* This will be replaced by the TOC
{:toc}
+Main Differences Between the Two Planners
+-----------------------------------------
+
+1. The Blink planner does not support `BatchTableSource`, only
`StreamTableSource`. Blink treats batch jobs a special case of streaming. As
such, batch jobs will not be translated into `DateSet` programs but translated
into `DataStream` programs, the same as the streaming jobs.
+2. The Blink planner does not support `ExternalCatalog` which is deprecated.
+3. The implementations of `FilterableTableSource` for the Flink planner and
the Blink planner are incompatible. The Flink planner will push down
`PlannerExpression`s into `FilterableTableSource`, while the Blink planner will
push down `Expression`s.
+4. String based key-value config options (defined in `OptimizerConfigOptions`
and `ExecutionConfigOptions`) are only used for the Blink planner.
Review comment:
We can use a link to the configuration page instead of point out the
classes. The configuration page is located in `docs/dev/table/config.md`
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