CometBroadcastExchangeExec cannot be reused by Spark ReuseExchangeAndSubquery rule #439
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Describe the bug
Spark
ReuseExchangeAndSubqueryrule detects duplicate exchanges in a query plan and reuses them if possible. When working on #437, I found that some Spark tests are failed becauseCometBroadcastExchangeExeccannot be reused by the rule.Steps to reproduce
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