raminqaf commented on code in PR #28403:
URL: https://github.com/apache/flink/pull/28403#discussion_r3413270488
##########
flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/plan/optimize/program/FlinkChangelogModeInferenceProgram.scala:
##########
@@ -1604,6 +1619,21 @@ class FlinkChangelogModeInferenceProgram extends
FlinkOptimizeProgram[StreamOpti
modifyKindSetTrait.modifyKindSet
}
+ /** Whether the node or any node in its input subtree produces UPDATE
changes. */
+ private def containsUpdates(rel: RelNode): Boolean =
+ getModifyKindSet(rel).contains(ModifyKind.UPDATE) ||
+ rel.getInputs.exists(input => containsUpdates(input))
+
+ /** Renders a node's type and changelog mode, for example
"Sink(changelogMode=[NONE])". */
Review Comment:
Now the sink contains the changelogMode
```
Sink(ChangelogMode=[I,UB,UA,D])
```
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