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What Does Flatten Do In Pig? |
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Answer» Sometimes there is data in a tuple or a bag and if we want to remove the level of NESTING from that data, then Flatten modifier in Pig can be used. Flatten un-nests bags and TUPLES. For tuples, the Flatten operator will substitute the fields of a tuple in place of a tuple, whereas un-nesting bags is a LITTLE COMPLEX because it requires CREATING new tuples. Sometimes there is data in a tuple or a bag and if we want to remove the level of nesting from that data, then Flatten modifier in Pig can be used. Flatten un-nests bags and tuples. For tuples, the Flatten operator will substitute the fields of a tuple in place of a tuple, whereas un-nesting bags is a little complex because it requires creating new tuples. |
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