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How many numbers of reducers run in Map-Reduce Job?
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What is a "reducer" in Hadoop?
Explain how mapreduce works.
How many Reducers run for a MapReduce job?
Mention what are the main configuration parameters that user need to specify to run mapreduce job?
What is the default input type in MapReduce?
What counter in Hadoop MapReduce?
Developing a MapReduce Application?
How does MapReduce framework view its input internally?
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?
Where is Mapper output stored?
What platform and Java version is required to run Hadoop?
Why Hadoop MapReduce?
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