the {adapter} adapter cannot compute {grouped }aggregates, so every requested statistic is computed client-side. Correct, and slower than it needs to be.

Warnings reference › source.pushdown.aggregates.**

Identifier

source.pushdown.aggregates.**

Raised by

The grid (core)

Since

1.17.0

What happened

The adapter implements neither executeAggregates nor - for a grouped query - executeGroupedAggregates, so no statistic is pushed at all: the whole set falls to the client rather than half of it being pushed. The figures are right and every one of them costs a full fetch.

The fix

Implement the aggregate method on the adapter. The id carries a .grouped suffix when it was the grouped variant that was missing.

Reference

Covered in full at the API reference.