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From newroyker <newroy...@gmail.com>
Subject Why Apache Spark doesn't use Calcite?
Date Mon, 13 Jan 2020 14:24:49 GMT
Was there a qualitative or quantitative benchmark done before a design
decision was made not to use Calcite? 

Are there limitations (for heuristic based, cost based, * aware optimizer)
in Calcite, and frameworks built on top of Calcite? In the context of big
data / TCPH benchmarks.

I was unable to dig up anything concrete from user group / Jira. Appreciate
if any Catalyst veteran here can give me pointers. Trying to defend
Spark/Catalyst.





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