[D] How do you use tensorflow (opinion on tf.Estimator/tf.Dataset) • r/MachineLearning

Estimator mostly saves you boilerplate. In the single host case, this is the train and eval loops, summaries, and checkpointing. You said you've had your pipeline for 2 years, so you've likely already implemented this yourself (in fact, 2 years ago Estimator barely existed IIRC). So it would likely bring you little benefit to switch now, except to save some code you have to maintain, maybe. In the distributed setting, it also helps you with graph replication.