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Published 20 hours ago • verified publisher icon matrixorigin

Implement the low cardinality index

Open qqIsAProgrammer opened this issue 2 years ago • 2 comments

What type of PR is this?

  • [ ] API-change
  • [ ] BUG
  • [x] Improvement
  • [ ] Documentation
  • [x] Feature
  • [ ] Test and CI
  • [ ] Code Refactoring

Which issue(s) this PR fixes:

issue #

What this PR does / why we need it:

This PR is for Summer-2022 Implement the Low Cardinality HashMap project, and the project ID is 22fa00152. This PR is implementing a low cardinality index, and will use it to optimize JOIN and GROUP BY. However, this PR is WIP and there is some work need to be done. So now please just ignore it!

qqIsAProgrammer avatar Sep 30 '22 13:09 qqIsAProgrammer

I added long ran, who must approve before we can merge.

fengttt avatar Sep 30 '22 15:09 fengttt

I added long ran, who must approve before we can merge.

okay, thx

qqIsAProgrammer avatar Oct 01 '22 02:10 qqIsAProgrammer

You only update the plan.proto, why the code of other proto changed? Check the protoc version and gogoprotobuf plugin version

sorry, I've resolved it.

qqIsAProgrammer avatar Oct 21 '22 14:10 qqIsAProgrammer

I don't think I understand this PR, need a design doc.

OK, I will do it soon.

qqIsAProgrammer avatar Oct 22 '22 07:10 qqIsAProgrammer