filter: refine comments and function visibility (#2308)#2311

Merged

ti-chi-bot merged 2 commits intopingcap:release-5.0from ti-chi-bot:cherry-pick-2308-to-release-5.0

Jul 19, 2021

+9-8

Commits on Jul 17, 2021

filter: refine comments and function visibility

Rustin170506
authored and
ti-chi-bot
committed

Commits on Jul 19, 2021

Merge branch 'release-5.0' into cherry-pick-2308-to-release-5.0
ti-chi-bot
authored