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What is heartbeat in hdfs?
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More MapReduce Interview Questions
How to create a custom key and custom value in MapReduce Job?
What is the need of MapReduce in Hadoop?
How many Mappers run for a MapReduce job in Hadoop?
With the help of two examples name the map and reduce function purpose
Which are the methods in the mapper interface?
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Define speculative execution?
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what daemons run on a master node and slave nodes?
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