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sql: better distribute distinct processors #52098

Merged
merged 2 commits into from
Aug 6, 2020
Merged

sql: better distribute distinct processors #52098

merged 2 commits into from
Aug 6, 2020

Commits on Aug 5, 2020

  1. sql: better distribute distinct processors 

    The distinct processors are planned in two stages - first, a "local"
stage is planned on the same nodes as the previous stage, then,
a "global" stage is added. Previously, the global stage would be planned
on the gateway, and this commit changes that to make it distributed - by
planning "global" distinct processors on the same nodes as the "local"
ones and connecting them via a hash router hashing the distinct columns.

Release note: None
    @yuzefovich
    yuzefovich committed Aug 5, 2020
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  2. sql: implement ConstructDistinct in the new factory 

    Release note: None
    @yuzefovich
    yuzefovich committed Aug 5, 2020
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    229df27 View commit details
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