Can there be no Reducer?
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Define speculative execution?
What is the input type/format in MapReduce by default?
what does the conf.setMapper Class do ?
What is a IdentityMapper and IdentityReducer in MapReduce ?
Explain InputSplit in Hadoop MapReduce?
Explain what is “map” and what is "reducer" in hadoop?
Explain what are the basic parameters of a mapper?
When is it not recommended to use MapReduce paradigm for large scale data processing?
How to set mappers and reducers for MapReduce jobs?
What is the difference between RDBMS with Hadoop MapReduce?
Explain the difference between a MapReduce InputSplit and HDFS block?
When is it not recommended to use MapReduce paradigm for large
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