1.

PCollection, PTable, and PGroupedTable all support a __________ operation.(a) intersection(b) union(c) OR(d) None of the mentionedI 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

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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