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What is a Distributed Cache in Hadoop?
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How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
How do you stop a running job gracefully?
What are the various configuration parameters required to run a mapreduce job?
Describe what happens to a mapreduce job from submission to output?
Developing a MapReduce Application?
What is a mapreduce algorithm?
Explain the differences between a combiner and reducer
What is a "map" in Hadoop?
What happens when the node running the map task fails before the map output has been sent to the reducer?
When should you use sequencefileinputformat?
What is an identity mapper and identity reducer?
What is identity mapper and reducer? In which cases can we use them?
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