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Can there be no Reducer?
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More MapReduce Interview Questions
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
Why MapReduce uses the key-value pair to process the data?
Explain what does the conf.setmapper class do?
In mapreduce what is a scarce system resource? Explain?
What is the inputsplit in map reduce software?
Explain what is the function of mapreduce partitioner?
What is an identity mapper and identity reducer?
what is distributed cache in mapreduce framework?
What is the difference between HDFS block and input split?
how indexing in HDFS is done?
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