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What is RecordReader in a Map Reduce?
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how can you check whether Namenode is working beside using the jps command?
How many times combiner is called on a mapper node in Hadoop?
How does MapReduce framework view its input internally?
Explain the general mapreduce algorithm
What combiners are and when you should utilize a combiner in a map reduce job?
Where sorting is done in Hadoop MapReduce Job?
what is distributed cache in mapreduce framework?
What is a partitioner and how the user can control which key will go to which reducer?
In MapReduce Data Flow, when Combiner is called?
What is a Distributed Cache in Hadoop?
Why MapReduce uses the key-value pair to process the data?
How do you stop a running job gracefully?
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