How is mapreduce related to cloud computing?
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What is a RecordReader in Hadoop MapReduce?
What is SequenceFileInputFormat in Hadoop MapReduce?
Mention Hadoop core components?
What is identity mapper and identity reducer?
For a Hadoop job, how will you write a custom partitioner?
How many Mappers run for a MapReduce job?
What are the primary phases of a Reducer?
What is a MapReduce Combiner?
For a job in Hadoop, is it possible to change the number of mappers to be created?
how indexing in HDFS is done?
Why Mapreduce output written in local disk?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
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