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Why comparison of types is important for MapReduce?
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Explain job scheduling through JobTracker
Mention what is the next step after mapper or maptask?
What is the Reducer used for?
What is an input reader in reference to mapreduce?
Explain what combiners are and when you should use a combiner in a mapreduce job?
List the network requirements for using Hadoop ?
Explain the differences between a combiner and reducer
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
How can we assure that the values regarding a particular key goes to the same reducer?
How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
Explain the difference between a MapReduce InputSplit and HDFS block?
What are the advantages of using map side join in mapreduce?
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