Explain InputSplit in Hadoop MapReduce?
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What is the input type/format in MapReduce by default?
Why is output file name in Hadoop MapReduce part-r-00000?
In Map Reduce why map write output to Local Disk instead of HDFS?
What are the advantages of using map side join in mapreduce?
Is there any point of learning mapreduce, then?
what are the basic parameters of a Mapper?
What is the function of mapreduce partitioner?
How does inputsplit in mapreduce determines the record boundaries correctly?
what is Speculative Execution?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
What are the primary phases of a Reducer?
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