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Serialization of string columns uses a ________ to form unique column values.(a) Footer(b) STRIPES(c) Dictionary(d) IndexThis 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 |
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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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