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PCollection, PTable, and PGroupedTable all support a __________ operation.

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PCollection, PTable, and PGroupedTable all support a __________ operation.

(a) intersection

(b) union

(c) OR

(d) None of the mentioned

I got this question during an interview.

The question is from Crunch with Hadoop topic in section Apache Spark, Flume, Lucene, Hama, HCatalog, Mahout, Drill, Crunch and Thrift of Hadoop

1 Answer

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Best answer
The correct option is (b) union

The explanation is: Union operation takes a series of distinct PCollections that all have the same data type and treats them as a single virtual PCollection.

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