On: Readings in Database Systems, 5th Edition (2015)

[atombender]

Well, he's absolutely right. MapReduce apparently didn't last that long at Google — it's long been supplanted by other technologies internally.

[century19 → atombender]

But MapReduce has long been superseded by Spark outside of Google right?

[vikiomega9 → atombender]

Which ones?

[atombender → vikiomega9]

As far as I remember, mostly Flume (open sourced as Apache Beam and also known as Cloud Dataflow on GCP).

Flume/Beam still provides map/reduce as operations, mind you, but with a much richer processing model.