1.

Point out the wrong statement.(a) DoFns also have a number of helper methods for working with Hadoop Counters, all named increment(b) The Crunch APIs contain a number of useful subclasses of DoFn that handle common data processing scenarios and are easier to write and test(c) FilterFn class defines a single abstract method(d) None of the mentioned

Answer» The correct choice is (d) None of the mentioned

For explanation: Counters are an incredibly useful way of keeping track of the state of long-running data pipelines and detecting any exceptional conditions that occur during processing


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