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Big Data - HDFS

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Lesson Description


Lession - #759 Hdfs Rack Awareness


Rack Awareness in Hadoop is the idea that picks nearer Datanodes in light of the rack data. Of course, Hadoop establishment accepts that every one of the hubs have a place with a similar rack. To further develop network traffic while reading/writiing HDFS files in huge cluster of Hadoop.

For that Hadoop has some Rack awareness policies. There ought not be more than 1 imitation on a similar Datanode. All the more then 2 reproduction's of a solitary square isn't permitted on a similar Rack. The quantity of racks utilized inside a Hadoop group should be smaller than the quantity of replicas