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What is sqoop in Hadoop ?
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What combiners are and when you should utilize a combiner in a map reduce job?
Define MapReduce?
What is optimal size of a file for distributed cache?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
Explain what is the function of mapreduce partitioner?
What are the various input and output types supported by mapreduce?
Is it mandatory to set input and output type/format in MapReduce?
Does Partitioner run in its own JVM or shares with another process?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
What is map/reduce job in hadoop?
What combiners are and when you should use a combiner in a mapreduce job?
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