ddl: add slow operations log to add indices, make trouble shooting easier. (#7060)#7083

Merged

winkyao merged 1 commit intopingcap:release-2.0from winkyao:cherry-pick-2.0

Jul 19, 2018

+48

Commits on Jul 18, 2018

ddl: add slow operations log to add indices, make trouble shooting easier. (#7060 )
winkyao
committed