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What do you understand by the term Straggler ?
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For a job in Hadoop, is it possible to change the number of mappers to be created?
How do reducers communicate with each other?
What is InputFormat in Hadoop MapReduce?
What is a partitioner and how the user can control which key will go to which reducer?
What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
List out Hadoop's three configuration files?
Why do we need MapReduce during Pig programming?
how Hadoop is different from other data processing tools?
What are the advantages of using mapreduce with hadoop?
What is a "reducer" in Hadoop?
What is identity mapper and reducer? In which cases can we use them?
Define Writable data types in Hadoop MapReduce?
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