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Asked: 2026-06-10T15:57:45+00:00

There are so many Hadoop versions and different distributions which make me confused. I

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There are so many Hadoop versions and different distributions which make me confused. I have a few questions.

  1. Apache Hadoop 1.x is from 0.20.205?
  2. Apache Hadoop 2.0 is from 0.22 or 0.23?
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  1. Editorial Team

    According to this blogpost from Cloudera:

    There is next to no functional difference between 0.20.205 and 1.0.
    This is just a renumbering.

    Hadoop’s Yarn site states:

    MapReduce has undergone a complete overhaul in hadoop-0.23 and we now
    have, what we call, MapReduce 2.0 (MRv2) or YARN

    It’s also worth to have a look at this diagram too. It shows the tree of different Hadoop versions as well as the 3rd party distributions on top of them.

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