What is Distributed Cache in the MapReduce Framework?
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Different ways of debugging a job in MapReduce?
What is a distributed cache in mapreduce framework?
List the network requirements for using Hadoop ?
Why Hadoop MapReduce?
Mention what is the next step after mapper or maptask?
What do sorting and shuffling do?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
How hadoop mapreduce works?
What is RecordReader in a Map Reduce?
when do reducers play their role in a mapreduce task?
what does the conf.setMapper Class do ?
What is the need of MapReduce?