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Define MapReduce?
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What is Output Format in MapReduce?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
What is the purpose of textinputformat?
What is a RecordReader in Hadoop MapReduce?
What is the best way to copy files between HDFS clusters?
Explain what combiners are and when you should use a combiner in a mapreduce job?
Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
What is the relation between MapReduce and Hive?
Write a short note on the disadvantages of mapreduce
How can we control particular key should go in a specific reducer?
What are the configuration parameters in the 'MapReduce' program?
What is a "reducer" in Hadoop?
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