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When the reducers are are started in a mapreduce job?
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It can be possible that a Job has 0 reducers?
Explain JobConf in MapReduce.
What is the need of key-value pair to process the data in MapReduce?
how JobTracker schedules a task ?
Different ways of debugging a job in MapReduce?
What is a "reducer" in Hadoop?
How hadoop mapreduce works?
Define speculative execution?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?
what does the text input format do?
What are the fundamental configurations parameters specified in map reduce?
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