executor: improve wide table insert & update performance (#7935)#8024

Merged

zz-jason merged 3 commits intopingcap:release-2.1from lysu:wid-insert-cp2.1

Oct 24, 2018

+70-47

Commits on Oct 23, 2018

executor: improve wide table insert & update performance (#7935 )
lysu
committed

Commits on Oct 24, 2018