Github user viirya closed the pull request at:
https://github.com/apache/spark/pull/15128
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GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/15128
[SPARK-17574][Core] Cache ShuffleExchange RDD when the exchange is reused
## What changes were proposed in this pull request?
We have the rule `ReuseExchange` to reuse exchange in the
