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Which Sorting algorithm is used in Hadoop MapReduce?
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What is difference between an input split and hdfs block?
What is the need of MapReduce in Hadoop?
What are the various input and output types supported by mapreduce?
Explain about the partitioning, shuffle and sort phase
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
How many numbers of reducers run in Map-Reduce Job?
What is the Hadoop MapReduce API contract for a key and value Class?
Name job control options specified by mapreduce.
Compare RDBMS with Hadoop MapReduce.
Define the purpose of the partition function in mapreduce framework
What platform and Java version is required to run Hadoop?
How to overwrite an existing output file during execution of mapreduce jobs?
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