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kwai / blaze

Blazing-fast query execution engine speaks Apache Spark language and has Arrow-DataFusion at its core.
Apache License 2.0
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Specialize count(1) aggregation #579

Closed richox closed 1 month ago

richox commented 2 months ago

Is your feature request related to a problem? Please describe. currently blaze treats count(1) as normal count aggregator and introduces extra computing.

Describe the solution you'd like possible solutions:

  1. specialize a AggCount1 aggregator which takes no parameters.
  2. handle such situation in the existed AggCount by supporting variable parameters.

Describe alternatives you've considered

Additional context