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What do you understand by the term Straggler ?
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Describe what happens to a mapreduce job from submission to output?
What is the relation between MapReduce and Hive?
What is the function of mapreducer partitioner?
Why is Apache Spark faster than Hadoop MapReduce?
If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?
What is shuffling and sorting in Hadoop MapReduce?
Define MapReduce?
What is the difference between HDFS block and input split?
In Hadoop what is InputSplit?
Explain the Reducer's reduce phase?
What are the various configuration parameters required to run a mapreduce job?
What is the purpose of textinputformat?
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