wuchong commented on a change in pull request #9195:
[FLINK-13289][table-planner-blink] Blink-planner should setKeyFields to upsert
table sink
URL: https://github.com/apache/flink/pull/9195#discussion_r307338916
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/plan/nodes/physical/stream/StreamExecSink.scala
##########
@@ -97,6 +97,26 @@ class StreamExecSink[T](
// check for append only table
val isAppendOnlyTable = UpdatingPlanChecker.isAppendOnly(this)
upsertSink.setIsAppendOnly(isAppendOnlyTable)
+
+ // extract unique key fields
+ // Now we pick shortest one to sink
+ // TODO UpsertStreamTableSink setKeyFields interface should be
Array[Array[String]]
+ val tableKeys = {
+ UpdatingPlanChecker.getUniqueKeyFields(getInput, planner) match {
+ case Some(keys) => keys.sortBy(_.length).headOption
Review comment:
Should we return the longest instead of the shortest one? So that it can be
the same with flink planner when window start and window end are both selected.
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