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What is LazyOutputFormat in MapReduce?
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Can we rename the output file?
What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?
What is an identity mapper and identity reducer?
What is the default input type in MapReduce?
Explain what does the conf.setMapper Class do in MapReduce?
What does a 'MapReduce Partitioner' do?
When the reducers are are started in a mapreduce job?
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What is a "reducer" in Hadoop?
For a job in Hadoop, is it possible to change the number of mappers to be created?
What is the inputsplit in map reduce software?
When should you use a reducer?
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