How to create custom key and custom value in MapReduce Job?
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Explain what does the conf.setMapper Class do in MapReduce?
Explain JobConf in MapReduce.
Explain what you understand by speculative execution
What is an input reader in reference to mapreduce?
How to compress mapper output in Hadoop?
Can we rename the output file?
Define Writable data types in Hadoop MapReduce?
Explain what is distributed cache in mapreduce framework?
Is it possible to search for files using wildcards?
What is the fundamental difference between a MapReduce InputSplit and HDFS block?
What is a Speculative Execution in Hadoop MapReduce?
Explain how do ‘map’ and ‘reduce’ work?
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