detect binlog purged and report to Drainer#1017

Open

csuzhangxc wants to merge 6 commits intopingcap:masterfrom csuzhangxc:drainer-gc-log

+152-35

Commits on Nov 27, 2020

*: check binlog purge before send binlog
csuzhangxc
committed

Commits on Nov 30, 2020

Commits on Dec 15, 2020

Merge branch 'master' into drainer-gc-log
csuzhangxc
authored