What do you mean by inputformat?
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What is Distributed Cache in the MapReduce Framework?
Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
What is the key- value pair in Hadoop MapReduce?
What is map/reduce job in hadoop?
What is Combiner in MapReduce?
How do reducers communicate with each other?
Can we rename the output file?
What is identity mapper and chain mapper?
What is the next step after Mapper or MapTask?
Is YARN a replacement of Hadoop MapReduce?
how can you check whether Namenode is working beside using the jps command?
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