[FLASH-204] Wrong Process About Applying Snapshot And Deleting Data#27

Merged

solotzg merged 3 commits intopingcap:raftfrom solotzg:FLASH-204

Mar 30, 2019

+191-133

Commits on Mar 29, 2019

Optimize learner read.
solotzg
committed

Commits on Mar 30, 2019