What is a distributed cache in mapreduce framework?
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What is Hadoop Map Reduce ?
Where the mapper's intermediate data will be stored?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
how can you debug Hadoop code?
Explain what combiners are and when you should use a combiner in a mapreduce job?
How do reducers communicate with each other?
When should you use a reducer?
What is the process of changing the split size if there is limited storage space on Commodity Hardware?
Define speculative execution?
What is mapper in map reduce?
Is there any point of learning mapreduce, then?
Different ways of debugging a job in MapReduce?
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