distsql: clean the memory usage of MemTracker when a query ends (#10898)#10970

Merged

zz-jason merged 3 commits intopingcap:release-3.0from SunRunAway:release-3.0-cp

Jul 1, 2019

+53-14

Commits on Jun 27, 2019

distsql: clean the memory usage of MemTracker when a query end… (pingcap#10898 )
SunRunAway
committed

Commits on Jul 1, 2019