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What is MapReduce in Hadoop?
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In Map Reduce why map write output to Local Disk instead of HDFS?
What are the advantages of using map side join in mapreduce?
How does MapReduce framework view its input internally?
how indexing in HDFS is done?
What is the next step after Mapper or MapTask?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
what is storage and compute nodes?
How to specify more than one directory as input to the MapReduce Job?
How to change the name of the output file from part-r-00000 in Hadoop MapReduce?
What are the main configuration parameters in a MapReduce program?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
What combiners is and when you should use a combiner in a MapReduce Job?
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