liuyongvs commented on code in PR #24015:
URL: https://github.com/apache/flink/pull/24015#discussion_r1439142391
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flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/codegen/agg/AggsHandlerCodeGenerator.scala:
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@@ -1230,8 +1232,26 @@ class AggsHandlerCodeGenerator(
needReset: Boolean = false,
needEmitValue: Boolean = false): Unit = {
// check and validate the needed methods
+ aggBufferCodeGens.zipWithIndex.foreach {
+ case (aggBufferCodeGen, index) =>
+ aggBufferCodeGen.checkNeededMethods(
+ needAccumulate,
+ needRetract && aggCallNeedRetractions(index),
+ needMerge,
Review Comment:
needRetract && index < aggCallNeedRetractions.length &&
aggCallNeedRetractions(index)
1. if needRetract is true, aggCallNeedRetractions can not be null, because
it will be set by needRetract(aggCallNeedRetractions: Array[Boolean]) and we
should add index < aggCallNeedRetractions.length because aggCalls have basic
functions , while aggBufferCodeGens have
countStar/distinct code function
3. if needRetract is false, although aggCallNeedRetractions is null, but
needRetract is false, will not run the logical of
aggCallNeedRetractions(index),. so it will not throw NPE or OutofBoundArray
Exception
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