Why can aggregation not be done in Mapper in MapReduce?
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What is a TaskInstance?
What is map/reduce job in hadoop?
What is the Hadoop MapReduce API contract for a key and value Class?
Developing a MapReduce Application?
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What is the problem with the small file in Hadoop?
When should you use a reducer?
what is distributed cache in mapreduce framework?
Explain JobConf in MapReduce.
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What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
Explain about the partitioning, shuffle and sort phase in MapReduce?
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