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MapReduce >> mail # user >> What is the difference between Rack-local map tasks and Data-local map tasks?


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What is the difference between Rack-local map tasks and Data-local map tasks?
hi all

When I run "hadoop job -status xxx",Output the following some list.

Rack-local map tasks=124
Data-local map tasks=6

What is the difference between Rack-local map tasks and Data-local map
tasks?
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[EMAIL PROTECTED]|Sam