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________ is a columnar storage format for Hadoop.

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________ is a columnar storage format for Hadoop.

(a) MRQL

(b) NiFi

(c) OpenAz

(d) Parquet

I have been asked this question in final exam.

Question is taken from Hadoop Incubators in division Incubator Projects, Chuckwa, Ambari, Knox and Hadoop Development Tools of Hadoop

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Right choice is (d) Parquet

The explanation is: NiFi is a dataflow system based on the concepts of flow-based programming.

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