Explain the input type/format in mapreduce by default?
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For a Hadoop job, how will you write a custom partitioner?
What is sqoop in Hadoop ?
mapper or reducer?
List the network requirements for using Hadoop ?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
What is the role of a MapReduce partitioner?
What is the difference between Hadoop and RDBMS?
how indexing in HDFS is done?
what is distributed cache in mapreduce framework?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is Distributed Cache in the MapReduce Framework?
What is SequenceFileInputFormat in Hadoop MapReduce?