How to set the number of reducers?
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Developing a MapReduce Application?
How to set the number of reducers?
If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?
Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
Describe what happens to a mapreduce job from submission to output?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
What comes in Hadoop 2.0 and MapReduce V2 YARN
Is it possible to rename the output file?
Explain what you understand by speculative execution
What is the key- value pair in Hadoop MapReduce?
what is a Task Tracker in Hadoop?
What is sqoop in Hadoop ?
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