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What is SequenceFileInputFormat in Hadoop MapReduce?
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What MapReduce framework consists of?
What is partitioning in MapReduce?
How to set the number of reducers?
What are the main components of MapReduce Job?
What is identity mapper and reducer? In which cases can we use them?
In Map Reduce why map write output to Local Disk instead of HDFS?
What is Shuffling and Sorting in a MapReduce?
What is a mapreduce algorithm?
For a job in Hadoop, is it possible to change the number of mappers to be created?
Can we rename the output file?
How would you tackle calculating the number of unique visitors for each hour by mining a huge apache log? You can use post processing on the output of the mapreduce job.
How many numbers of reducers run in Map-Reduce Job?
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