How to sort intermediate output based on values in MapReduce?
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how can you check whether Namenode is working beside using the jps command?
Define MapReduce?
What is LazyOutputFormat in MapReduce?
Explain how mapreduce works.
What is the difference between a MapReduce InputSplit and HDFS block?
How to create custom key and custom value in MapReduce Job?
Is it possible to search for files using wildcards?
when do reducers play their role in a mapreduce task?
When should you use a reducer?
List out Hadoop's three configuration files?
What combiners is and when you should use a combiner in a MapReduce Job?
Explain what you understand by speculative execution
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