jonahgao commented on issue #7876:
URL:
https://github.com/apache/arrow-datafusion/issues/7876#issuecomment-1772330165
After some initial debugging, I found that this issue is likely caused by
the optimization rule `PushDownFilter`.
I think we should avoid pushing down non-deterministic predicates.
Before optimization:
```sh
projection: Projection: aggregate_test_100.c1, random() AS r
Aggregate: groupBy=[[aggregate_test_100.c1]], aggr=[[]]
Projection: aggregate_test_100.c1
TableScan: aggregate_test_100
```
After:
```sh
Projection: aggregate_test_100.c1, random() AS r
Aggregate: groupBy=[[aggregate_test_100.c1]], aggr=[[]]
Projection: aggregate_test_100.c1
Filter: random() <= Float64(0.2)
TableScan: aggregate_test_100, partial_filters=[random() <=
Float64(0.2)]
```
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