the {adapter} adapter was not asked to group...

Warnings reference › source.pushdown.group.*.*

Identifier

source.pushdown.group.*.*

Raised by

The grid (core)

Since

1.63.0

What happened

Grouping was not pushed for the reason named, and fullDataset holds every matching row, so the grid groups them itself - over the whole set, which is correct. Without fullDataset the same refusal is source.pushdown.group-unsupported.*.* and the grid stays ungrouped.

The fix

Nothing is wrong: the reason is printed in the message and is also in lastPlan().unpushed. Widen the adapter to push the grouping and stop holding the whole set.

Reference

Covered in full at the API reference.