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Serialization of string columns uses a ________ to form unique column values.

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+1 vote
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in Hadoop by (122k points)
Serialization of string columns uses a ________ to form unique column values.

(a) Footer

(b) STRIPES

(c) Dictionary

(d) Index

This question was posed to me by my school teacher while I was bunking the class.

The doubt is from Querying Data with HiveQL topic in section Hive and HBase of Hadoop

1 Answer

+1 vote
by (888k points)
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Best answer
Right choice is (c) Dictionary

The best I can explain: The dictionary is sorted to speed up predicate filtering and improve compression ratios.

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