*: optimize log and make their specification consistent (#2853)#2903

Merged

ti-srebot merged 1 commit intotikv:release-4.0from ti-srebot:release-4.0-68767909a740

Sep 7, 2020

+239-130

Commits on Sep 7, 2020

cherry pick tikv#2853 to release-4.0
rleungx
committed