message: Change bucket boundaries of checkpoint read and write metrics.
diff: @@ -70,16 +70,16 @@ _SESSION_PROVIDER = None
  _checkpoint_write_durations = monitoring.Sampler(
  "/tensorflow/core/checkpoint/write/write_durations",
  - # Scale of 10, power of 1.8 with bucket count 33 (~25 minutes).
  - monitoring.ExponentialBuckets(10, 1.8, 33),
  + # Scale of 1000, growth factor of 1.5 with upper bound of ~184 minutes.
  + monitoring.ExponentialBuckets(1000, 1.5, 41),
  "Distribution of the wall time duration in microseconds of the "
  "`tf.train.Checkpoint.write` operation",
  "version")
  _checkpoint_read_durations = monitoring.Sampler(
  "/tensorflow/core/checkpoint/read/read_durations",
  - # Scale of 10, power of 1.8 with bucket count 33 (~25 minutes).
  - monitoring.ExponentialBuckets(10, 1.8, 33),
  + # Scale of 1000, growth factor of 1.5 with upper bound of ~184 minutes.
  + monitoring.ExponentialBuckets(1000, 1.5, 41),
  "Distribution of the wall time duration in microseconds of the "
  "`tf.train.Checkpoint.restore` operation",
  "version")
  