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What is SequenceFileInputFormat?
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What do you understand by mapreduce?
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 Reducers run for a MapReduce job?
Where sorting is done in Hadoop MapReduce Job?
How many InputSplits is made by a Hadoop Framework?
Explain the Reducer's reduce phase?
What are the primary phases of a Reducer?
What does a split do?
Why is output file name in Hadoop MapReduce part-r-00000?
What is partitioning in MapReduce?
What are the various configuration parameters required to run a mapreduce job?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
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