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From Andrey Meleshko <>
Subject IMRU: Reduce function is initialized on all nodes including Mapper nodes.
Date Wed, 13 Jul 2016 19:30:31 GMT
I expected Reduce function to be initialized on Update node only,
but I can see that constructor of Reduce function is triggered on Map nodes as well (just
constructor is called on all nodes, Reduce() function is called on Update[master] node only)
Is this expected? Do we need ReduceFunction instance on all nodes?

Thank you,

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