tablet should stay healthy while running xtrabackup#5066

Merged

deepthi merged 7 commits intovitessio:masterfrom

planetscale:ds-xb-5062

Aug 15, 2019

Commits on Aug 9, 2019

don't take the action lock while running xtrabackup because that prevents tablet from updating its replication lag
deepthi
committed
address review comments
deepthi
committed

Commits on Aug 10, 2019

implement boolean state for xtrabackup, and stats variable for whether online backup is running
deepthi
committed
check whether backup is already running
deepthi
committed

Commits on Aug 11, 2019

Merge branch 'master' into ds-xb-5062
deepthi
authored

Commits on Aug 14, 2019