Return a new RateEstimator
based on the value of
spark.streaming.backpressure.rateEstimator
.
Return a new RateEstimator
based on the value of
spark.streaming.backpressure.rateEstimator
.
The only known and acceptable estimator right now is pid
.
An instance of RateEstimator
IllegalArgumentException
if the configured RateEstimator is not pid
.