andygrove commented on issue #1238:
URL:
https://github.com/apache/datafusion-comet/issues/1238#issuecomment-2580008932
Query plan in `auto` mode passes because we fall back to Spark for most of
the query:
```
AdaptiveSparkPlan isFinalPlan=false
+- CometSort [uid#7, count(DISTINCT score)#12L], [uid#7 ASC NULLS FIRST]
+- CometColumnarExchange rangepartitioning(uid#7 ASC NULLS FIRST, 10),
ENSURE_REQUIREMENTS, CometColumnarShuffle, [plan_id=528]
+- HashAggregate(keys=[uid#7], functions=[count(distinct score#56)],
output=[uid#7, count(DISTINCT score)#12L])
+- Exchange hashpartitioning(uid#7, 10), ENSURE_REQUIREMENTS,
[plan_id=523]
+- HashAggregate(keys=[uid#7], functions=[partial_count(distinct
score#56)], output=[uid#7, count#59L])
+- HashAggregate(keys=[uid#7, score#56], functions=[],
output=[uid#7, score#56])
+- Exchange hashpartitioning(uid#7, score#56, 10),
ENSURE_REQUIREMENTS, [plan_id=519]
+- HashAggregate(keys=[uid#7,
knownfloatingpointnormalized(normalizenanandzero(score#8)) AS score#56],
functions=[], output=[uid#7, score#56])
+- LocalTableScan [uid#7, score#8]
```
Query plan in `jvm` mode:
```
CometSort [uid#7, count(DISTINCT score)#12L], [uid#7 ASC NULLS FIRST]
+- CometColumnarExchange rangepartitioning(uid#7 ASC NULLS FIRST, 10),
ENSURE_REQUIREMENTS, CometColumnarShuffle, [plan_id=190]
+- !CometHashAggregate [uid#7, count#35L], Final, [uid#7],
[count(distinct score#32)]
+- CometColumnarExchange hashpartitioning(uid#7, 10),
ENSURE_REQUIREMENTS, CometColumnarShuffle, [plan_id=188]
+- !CometHashAggregate [uid#7, score#32], Partial, [uid#7],
[partial_count(distinct score#32)]
+- CometHashAggregate [uid#7, score#32], [uid#7, score#32]
+- CometColumnarExchange hashpartitioning(uid#7, score#32,
10), ENSURE_REQUIREMENTS, CometColumnarShuffle, [plan_id=163]
+- HashAggregate(keys=[uid#7,
knownfloatingpointnormalized(normalizenanandzero(score#8)) AS score#32],
functions=[], output=[uid#7, score#32])
+- LocalTableScan [uid#7, score#8]
```
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