Represents the different states of a TPU node during its
lifecycle.
Values:
STATE_UNSPECIFIED (0):
TPU node state is not known/set.
CREATING (1):
TPU node is being created.
READY (2):
TPU node has been created.
RESTARTING (3):
TPU node is restarting.
REIMAGING (4):
TPU node is undergoing reimaging.
DELETING (5):
TPU node is being deleted.
REPAIRING (6):
TPU node is being repaired and may be unusable. Details can
be found in the 'help_description' field.
STOPPED (8):
TPU node is stopped.
STOPPING (9):
TPU node is currently stopping.
STARTING (10):
TPU node is currently starting.
PREEMPTED (11):
TPU node has been preempted. Only applies to
Preemptible TPU Nodes.
TERMINATED (12):
TPU node has been terminated due to
maintenance or has reached the end of its life
cycle (for preemptible nodes).
HIDING (13):
TPU node is currently hiding.
HIDDEN (14):
TPU node has been hidden.
UNHIDING (15):
TPU node is currently unhiding.
