*: reduce memory consumption by reducing channel sizes (#1999)#2012

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ti-chi-bot merged 4 commits intopingcap:release-5.0from ti-chi-bot:cherry-pick-1999-to-release-5.0

Jun 22, 2021

+4-8

Commits on Jun 10, 2021

This is an automated cherry-pick of pingcap#1999

liuzix
authored and
ti-chi-bot
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Commits on Jun 22, 2021