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From Frank Luo <>
Subject read a Hive Map without knowing keys
Date Mon, 17 Mar 2014 22:05:14 GMT
Is there a way to read Hive Map datatype without knowing keys?

According to Hive document, the only way to read a Map is to access through keys, ie:   myMap['myKey'].
However, in many cases, the keys are unknown, for example, HTable sparse columns, so in that
kind of situation, what is the ways to read the map?

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