fangchenli opened a new issue, #23434:
URL: https://github.com/apache/datafusion/issues/23434
### Describe the bug
When two inputs carry the same schema-level metadata key with different
values, a pure cross join (CrossJoinExec) over them feeding an aggregate fails
with:
Internal error: Physical input schema should be the same as the one converted
from logical input schema. Differences:
- schema metadata differs: (physical) {"pandas": "RIGHT-SCHEMA"} vs
(logical) {"pandas": "LEFT-SCHEMA"}
Hash/equijoins and filtered nested-loop joins on the same tables work; only
the pure cross-product path is affected.
### To Reproduce
_No response_
### Expected behavior
_No response_
### Additional context
xref: #16221 #21127
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