What can be optimum value for Reducer?
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When is it suggested to use a combiner in a MapReduce job?
What is a distributed cache in mapreduce framework?
In mapreduce what is a scarce system resource? Explain?
How can we assure that the values regarding a particular key goes to the same reducer?
Explain what is shuffling in mapreduce?
How to set the number of reducers?
Explain JobConf in MapReduce.
What are the four basic parameters of a reducer?
Can we rename the output file?
What is difference between an input split and hdfs block?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
What is Data Locality in Hadoop?