Which Sorting algorithm is used in Hadoop MapReduce?
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What is the best way to copy files between HDFS clusters?
What is a Speculative Execution in Hadoop MapReduce?
Can we set the number of reducers to zero in MapReduce?
Explain job scheduling through JobTracker
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
What is the default input type in MapReduce?
Can there be no Reducer?
Explain the input type/format in mapreduce by default?
How to create a custom key and custom value in MapReduce Job?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
Compare RDBMS with Hadoop MapReduce.
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
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