godfreyhe commented on a change in pull request #11674:
[FLINK-16887][table-planner-blink] Refactor retraction rules to support
inferring ChangelogMode
URL: https://github.com/apache/flink/pull/11674#discussion_r407199265
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/plan/trait/TraitUtil.scala
##########
@@ -57,12 +57,4 @@ object TraitUtil {
}
}
- /**
- * Checks if a [[RelNode]] is in [[AccMode.AccRetract]] mode.
- */
- def isAccRetract(rel: RelNode): Boolean = {
Review comment:
remove useless import too
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