IsEndStatus checks whether s is an end status.

NewBuilder creates a Builder.

NewOperator creates a new operator.

NewOpStatusTracker creates an OpStatus.

OpStatusToString converts Status to string.

CANCELED due to some reason.

EXPIRED waiting for too long.

STARTED and not finished.

SUCCESS Finished successfully.

Builder is used to create operators.

Controller is used to manage operators.

Operator contains execution steps generated by scheduler.

OpStatusTracker represents the status of an operator.

StopLogStore corresponds to log store shutdown command.

StopTnStore corresponds to tn store shutdown command.

OpStatus represents the status of an Operator.