In mapreduce what is a scarce system resource? Explain?
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What are the data components used by Hadoop?
What is the utility of using Writable Comparable Custom Class in Map Reduce code?
How to set the number of mappers to be created in MapReduce?
Explain job scheduling through JobTracker
What is Output Format in MapReduce?
What is identity mapper and identity reducer?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
What is map/reduce job in hadoop?
In Hadoop, which file controls reporting in Hadoop?
what does the text input format do?
What is partitioner and its usage?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
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