You're upgrading a Hadoop cluster from HDFS and MapReduce version 1 (MRv1) to one running HDFS and MapReduce version 2 (MRv2) on YARN. You want to set and enforce version 1 (MRv1) to one running…

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• AYou cannot enforce this, since client code can always override this value
• BSet dfs.block.size to 128M on all the worker nodes, on all client machines, and on the
• CSet dfs.block.size to 128 M on all the worker nodes and client machines, and set the parameter to
• DSet dfs.block.size to 134217728 on all the worker nodes, on all client machines, and on the
• ESet dfs.block.size to 134217728 on all the worker nodes and client machines, and set the

• A
  3% (1)
• B
  11% (4)
• C
  8% (3)
• D
  3% (1)
• E
  75% (27)

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