andygrove commented on PR #2429:
URL:
https://github.com/apache/datafusion-comet/pull/2429#issuecomment-3335839655
I found that we fall back to Spark when there are multiple count distinct
e.g.
```
test("mulitple count distinct with group column") {
val df = spark.read.parquet(filename)
df.createOrReplaceTempView("t1")
val sql = s"SELECT c1, count(distinct c2), count(distinct c3) FROM t1
group by c1"
val (_, cometPlan) = checkSparkAnswer(sql)
if (usingDataSourceExec) {
assert(1 == collectNativeScans(cometPlan).length)
}
}
```
This isn't an issue for this PR, but thought I should make a note of this.
```
Comet cannot accelerate HashAggregateExec because: Aggregate expression with
filter is not supported
```
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