How can you add the arbitrary key-value pairs in your mapper?
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How hadoop mapreduce works?
What is the difference between a MapReduce InputSplit and HDFS block?
Is it important for Hadoop MapReduce jobs to be written in Java?
when do reducers play their role in a mapreduce task?
What happen if the number of the reducer is 0 in MapReduce?
Where sorting is done in Hadoop MapReduce Job?
What is an input reader in reference to mapreduce?
What is the default input type in MapReduce?
How many Reducers run for a MapReduce job?
What is the difference between an RDBMS and Hadoop?
How many Mappers run for a MapReduce job?
how can you check whether Namenode is working beside using the jps command?
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