viirya commented on code in PR #441:
URL: https://github.com/apache/datafusion-comet/pull/441#discussion_r1605809454
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spark/src/main/scala/org/apache/comet/CometSparkSessionExtensions.scala:
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@@ -576,11 +576,13 @@ class CometSparkSessionExtensions
// exchange. It is only used for Comet native execution. We only
transform Spark broadcast
// exchange to Comet broadcast exchange if its downstream is a Comet
native plan or if the
// broadcast exchange is forced to be enabled by Comet config.
+ // Note that `CometBroadcastExchangeExec` is only supported for Spark
3.4+.
case plan if
plan.children.exists(_.isInstanceOf[BroadcastExchangeExec]) =>
val newChildren = plan.children.map {
case b: BroadcastExchangeExec
if isCometNative(b.child) &&
- isCometOperatorEnabled(conf, "broadcastExchangeExec") =>
+ isCometOperatorEnabled(conf, "broadcastExchangeExec") &&
+ isSpark34Plus => // Spark 3.4+ only
Review Comment:
`CometBroadcastExchangeExec` is only for 3.4+ not `BroadcastExchangeExec`.
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