Explain InputSplit in Hadoop MapReduce?
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How to sort intermediate output based on values in MapReduce?
What does a split do?
What is a combiner and where you should use it?
how indexing in HDFS is done?
How hadoop mapreduce works?
What is mapper in map reduce?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
What do you mean by shuffling and sorting in MapReduce?
What is the difference between map and reduce?
What is Reducer in MapReduce?
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
Mention what is the next step after mapper or maptask?
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