What is the default input type in MapReduce?
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what does the text input format do?
Compare RDBMS with Hadoop MapReduce.
What is the problem with the small file in Hadoop?
What is Shuffling and Sorting in a MapReduce?
What are the advantages of using map side join in mapreduce?
What is difference between an input split and hdfs block?
Explain what is the function of mapreduce partitioner?
When Namenode is down what happens to job tracker?
Explain about the partitioning, shuffle and sort phase
What is heartbeat in hdfs? Explain.
What are the primary phases of a Reducer?
What is reduce side join in mapreduce?
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