What is the sequence of execution of Mapper, Combiner, and Partitioner in MapReduce?
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What does a split do?
Where is the output of Mapper written in Hadoop?
Is it possible to split 100 lines of input as a single split in MapReduce?
What is difference between an input split and hdfs block?
What happens when the node running the map task fails before the map output has been sent to the reducer?
Explain about the partitioning, shuffle and sort phase
What is MapReduce?
What is MapReduce in Hadoop?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
What is the best way to copy files between HDFS clusters?
When Namenode is down what happens to job tracker?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
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