What is the job of blend () and repartition () in Map Reduce?
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In mapreduce what is a scarce system resource? Explain?
What are the various configuration parameters required to run a mapreduce job?
How many Mappers run for a MapReduce job in Hadoop?
what is a Task Tracker in Hadoop?
How to change the name of the output file from part-r-00000 in Hadoop MapReduce?
How would you tackle calculating the number of unique visitors for each hour by mining a huge apache log? You can use post processing on the output of the mapreduce job.
In Hadoop, which file controls reporting in Hadoop?
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
What is the problem with the small file in Hadoop?
Why is output file name in Hadoop MapReduce part-r-00000?
What is a IdentityMapper and IdentityReducer in MapReduce ?
What is shuffling and sorting in mapreduce?