In MapReduce, ideally how many mappers should be configured on a slave?
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What is the role of a MapReduce partitioner?
What is identity mapper and identity reducer?
Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
What are mapreduce new and old apis while writing map reduce program?. Explain how it works
Is reduce-only job possible in Hadoop MapReduce?
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
What is the use of InputFormat in MapReduce process?
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
It can be possible that a Job has 0 reducers?
What is the core of the job in MapReduce framework?
what are the most common input formats defined in Hadoop?
What is RecordReader in a Map Reduce?
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