[spark] Integrate statistics into spark scan #2798
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+1. Merging. |
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Purpose
Integrate statistics into spark scan
Tests
Test this on 1T tpc-ds, overall performance improved by 15%, some case:
q19 cost from 175s -> 11s
q64 cost from 84s -> 56s
q72 can't run -> 32s
API and Format
Documentation