andygrove commented on issue #744:
URL:
https://github.com/apache/datafusion-comet/issues/744#issuecomment-2270014186
I managed to reproduce with a real-world query in a cluster.
## Count
```
scala> val df = spark.sql("select cs_sold_date_sk, cs_item_sk,
cs_order_number, count(*) from catalog_sales group by cs_sold_date_sk,
cs_item_sk, cs_order_number")
df: org.apache.spark.sql.DataFrame = [cs_sold_date_sk: int, cs_item_sk: int
... 2 more fields]
scala> spark.time(df.write.format("noop").mode("overwrite").save())
24/08/05 16:13:44 WARN CometSparkSessionExtensions$CometExecRule: Comet
cannot execute some parts of this plan natively (set
spark.comet.explainFallback.enabled=false to disable this logging):
OverwriteByExpression [COMET: OverwriteByExpression is not supported]
+- CometHashAggregate
+- CometExchange
+- CometHashAggregate
+- CometScan parquet
24/08/05 16:14:03 WARN CometSparkSessionExtensions$CometExecRule: Comet
cannot execute some parts of this plan natively (set
spark.comet.explainFallback.enabled=false to disable this logging):
CometHashAggregate
+- AQEShuffleRead [COMET: AQEShuffleRead is not supported]
+- CometSinkPlaceHolder
+- CometExchange
+- CometHashAggregate
+- CometScan parquet
Time taken: 134709 ms
```
## Sum
```
scala> val df = spark.sql("select cs_sold_date_sk, cs_item_sk,
cs_order_number, sum(cs_quantity) from catalog_sales group by cs_sold_date_sk,
cs_item_sk, cs_order_number")
df: org.apache.spark.sql.DataFrame = [cs_sold_date_sk: int, cs_item_sk: int
... 2 more fields]
scala> spark.time(df.write.format("noop").mode("overwrite").save())
24/08/05 16:16:53 WARN CometSparkSessionExtensions$CometExecRule: Comet
cannot execute some parts of this plan natively (set
spark.comet.explainFallback.enabled=false to disable this logging):
OverwriteByExpression [COMET: OverwriteByExpression is not supported]
+- CometHashAggregate
+- CometExchange
+- CometHashAggregate
+- CometScan parquet
24/08/05 16:16:58 WARN CometSparkSessionExtensions$CometExecRule: Comet
cannot execute some parts of this plan natively (set
spark.comet.explainFallback.enabled=false to disable this logging):
CometHashAggregate
+- AQEShuffleRead [COMET: AQEShuffleRead is not supported]
+- CometSinkPlaceHolder
+- CometExchange
+- CometHashAggregate
+- CometScan parquet
Time taken: 11439 ms
```
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