CometNativeColumnarToRow
+- CometProject
   +- CometSort
      +- CometColumnarExchange
         +- Project
            +-  Window [COMET: WindowExec is not fully compatible with Spark (Native WindowExec has known correctness issues). To enable it anyway, set spark.comet.operator.WindowExec.allowIncompatible=true. For more information, refer to the Comet Compatibility Guide (https://datafusion.apache.org/comet/user-guide/compatibility.html).]
               +- CometNativeColumnarToRow
                  +- CometSort
                     +- CometExchange
                        +- CometHashAggregate
                           +- CometExchange
                              +- CometHashAggregate
                                 +- CometProject
                                    +- CometBroadcastHashJoin
                                       :- CometProject
                                       :  +- CometBroadcastHashJoin
                                       :     :- CometFilter
                                       :     :  +- CometNativeScan parquet spark_catalog.default.store_sales
                                       :     :        +- CometSubqueryBroadcast
                                       :     :           +- CometBroadcastExchange
                                       :     :              +- CometProject
                                       :     :                 +- CometFilter
                                       :     :                    +- CometNativeScan parquet spark_catalog.default.date_dim
                                       :     +- CometBroadcastExchange
                                       :        +- CometProject
                                       :           +- CometFilter
                                       :              +- CometNativeScan parquet spark_catalog.default.item
                                       +- CometBroadcastExchange
                                          +- CometProject
                                             +- CometFilter
                                                +- CometNativeScan parquet spark_catalog.default.date_dim

Comet accelerated 26 out of 29 eligible operators (89%). Final plan contains 2 transitions between Spark and Comet.