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https://issues.apache.org/jira/browse/IGNITE-24664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksey Plekhanov reassigned IGNITE-24664:
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Assignee: Aleksey Plekhanov
> Calcite engine. Use _key_PK index scan instead of hash index scan if possible
> -----------------------------------------------------------------------------
>
> Key: IGNITE-24664
> URL: https://issues.apache.org/jira/browse/IGNITE-24664
> Project: Ignite
> Issue Type: Improvement
> Reporter: Aleksey Plekhanov
> Assignee: Aleksey Plekhanov
> Priority: Major
> Labels: calcite, ise
>
> Looks like _key_PK index scan is more effective than hash index scan. Hash
> index scan requires also entity type check, but _key_PK index scan only built
> for required entity type, so type check can be skipped.
> H2 engine uses PK index scan for table scans (see H2TableScanIndex.delegate()
> method).
> Calcite engine should also use PK index scan when indexes are in correct
> state.
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