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What is an identity mapper and identity reducer?
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In Map Reduce why map write output to Local Disk instead of HDFS?
how indexing in HDFS is done?
Where sorting is done in Hadoop MapReduce Job?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
what happens in textinformat ?
Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
How to write MapReduce Programs?
How is mapreduce related to cloud computing?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
Is it important for Hadoop MapReduce jobs to be written in Java?
Does Partitioner run in its own JVM or shares with another process?
List the network requirements for using Hadoop ?
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Apache Hadoop (394) - MapReduce (354)
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