How to specify more than one directory as input in the Hadoop MapReduce Program?
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What is the difference between map and reduce?
What can be optimum value for Reducer?
In Hadoop, which file controls reporting in Hadoop?
For a Hadoop job, how will you write a custom partitioner?
What is a partitioner and how the user can control which key will go to which reducer?
What are ‘reduces’?
What is the default input type in MapReduce?
What combiners are and when you should utilize a combiner in a map reduce job?
What is the difference between Job and Task in MapReduce?
what is WebDAV in Hadoop?
What is the difference between a MapReduce InputSplit and HDFS block?
In Map Reduce why map write output to Local Disk instead of HDFS?
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