What is a partitioner and how the user can control which key will go to which reducer?
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What is a map side join?
What is a RecordReader in Hadoop MapReduce?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
Mention Hadoop core components?
What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?
What is the difference between map and reduce?
What does conf.setmapper class do?
Why Hadoop MapReduce?
what is storage and compute nodes?
What is mapper in map reduce?
It can be possible that a Job has 0 reducers?
What are combiners? When should I use a combiner in my MapReduce Job?
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