Map and Reduce task memory settings in Hadoop YARN

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In a map-reduce application on YARN is it necessary that the maximum memory of reducer task should be more than map task ?
Apr 18, 2018 in Big Data Hadoop by Ashish
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It's preferable and generally, it is recommended that the reducer memory settings are higher than the mapper memory settings.

By default, both MapReduce.map.memory.mb and MapReduce.reduce.memory.mb are set to 1,024 MB
answered Apr 18, 2018 by kurt_cobain
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