GetOwnerInfo gets the owner information.

NewMockManager creates a new mock Manager.

NewOwnerManager creates a new Manager.

NewSession creates a new etcd session.

NewSessionDefaultRetryCnt is the default retry times when create new session.

NewSessionRetryUnlimited is the unlimited retry times when create new session.

ManagerSessionTTL is the etcd session's TTL in seconds.

DDLOwnerChecker is used to check whether tidb is owner.

Manager is used to campaign the owner and manage the owner information.