What is the need of MapReduce?
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what is a sequence file in Hadoop?
Different ways of debugging a job in MapReduce?
Define Writable data types in Hadoop MapReduce?
How to overwrite an existing output file during execution of mapreduce jobs?
Mention what is the next step after mapper or maptask?
Define the purpose of the partition function in mapreduce framework
what is NameNode in Hadoop?
What are the four basic parameters of a reducer?
What is mapreduce algorithm?
In Map Reduce why map write output to Local Disk instead of HDFS?
Compare RDBMS with Hadoop MapReduce.
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
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