Github user maryannxue commented on the issue: https://github.com/apache/spark/pull/21821 I just ran a test with once-strategy check and found out that a few batches/rules do not stop, e.g. AggregatePushDown, "Convert to Spark client exec", PartitionPruning. I believe most of them are edge rules and none of them are analyzer rules. Still, let's keep this fix until just to be on the safe side.
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