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_____________ accepts a table to read data from and optionally a selection predicate to indicate which partitions to scan.

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_____________ accepts a table to read data from and optionally a selection predicate to indicate which partitions to scan.

(a) HCatOutputFormat

(b) HCatInputFormat

(c) OutputFormat

(d) InputFormat

This question was posed to me during an online interview.

I'm obligated to ask this question of Introduction to Hcatalog in portion Apache Spark, Flume, Lucene, Hama, HCatalog, Mahout, Drill, Crunch and Thrift of Hadoop

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Correct option is (b) HCatInputFormat

The explanation: The HCatalog interface for MapReduce — HCatInputFormat and HCatOutputFormat — is an implementation of Hadoop InputFormat and OutputFormat.

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