Values:
STATE_UNSPECIFIED (0):
The default value. This value is used if the
state is omitted.
ACCEPTED (1):
Request is received.
WAITING (2):
Request operation is waiting for scheduling.
RUNNING (3):
Request is being processed.
SUCCEEDED (4):
The batch processing completed successfully.
CANCELLED (5):
The batch processing was cancelled.
FAILED (6):
The batch processing has failed.