tdas commented on a change in pull request #33093:
URL: https://github.com/apache/spark/pull/33093#discussion_r662280740
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/UnsupportedOperationChecker.scala
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@@ -37,6 +37,12 @@ object UnsupportedOperationChecker extends Logging {
case p if p.isStreaming =>
throwError("Queries with streaming sources must be executed with
writeStream.start()")(p)
+ case f: FlatMapGroupsWithState =>
+ if (f.hasInitialState) {
+ throwError("Batch [flatMap|map]GroupsWithState queries should not" +
Review comment:
Initial state is not supported in [flatMap|map]GroupsWithState operation
on a batch DataFrame/Dataset
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