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Asked: 2026-06-02T18:02:06+00:00

A map task in hadoop works on a 64/128 MB split of the input

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A map task in hadoop works on a 64/128 MB split of the input file. It starts processing from the 1st line of the input split till the end. I need to find out how to know when a map task is done processing its input split. In other words, before shuffle and sort begins. Is there any method in hadoop library which can answer my question?

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1 Answer

  1. Editorial Team

    The cleanup method of the Mapper class allows you to execute code when the mapper is done processing the input split, simply override it in the same way you override the map method.

    If that’s not what you’re after, maybe a Counter can solve your problem?

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