executor: add more runtime information for join executor (#19721)#20093

Merged

SunRunAway merged 10 commits intopingcap:release-4.0from ti-srebot:release-4.0-221223b46b43

Sep 21, 2020

+256-29

Commits on Sep 18, 2020

cherry pick pingcap#19721 to release-4.0

crazycs520
authored and
ti-srebot
committed
fix conflict
crazycs520
committed

Commits on Sep 21, 2020