Taras Ledkov created IGNITE-9616:
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Summary: SQL: Introduce H2 factory for holder of aggregate result
Key: IGNITE-9616
URL: https://issues.apache.org/jira/browse/IGNITE-9616
Project: Ignite
Issue Type: Improvement
Components: sql
Affects Versions: 2.6
Reporter: Taras Ledkov
H2 collects aggregate results at the simple HashMap (groups set and values set).
This causes an OOME error on large groups set and large group size with
{{DISTINCT}}.
We have to introduce way to use our own implementation of the aggregate
result's container.
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