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What is the role of recordreader in hadoop mapreduce?
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What combiners are and when you should use a combiner in a mapreduce job?
Explain what does the conf.setmapper class do?
What MapReduce framework consists of?
What are combiners? When should I use a combiner in my MapReduce Job?
What is the input type/format in MapReduce by default?
What main configuration parameters are specified in mapreduce?
What is the use of InputFormat in MapReduce process?
What do you understand by compute and storage nodes?
Explain slot in Hadoop Map-Reduce v1?
what is "map" and what is "reducer" in Hadoop?
Explain what is distributed cache in mapreduce framework?
How to change a number of mappers running on a slave in MapReduce?
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