how can you check whether Namenode is working beside using the jps command?
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Explain what is shuffling in mapreduce?
What is the relationship between Job and Task in Hadoop?
Explain the process of spilling in MapReduce?
What is the input type/format in MapReduce by default?
What is a combiner and where you should use it?
How to optimize MapReduce Job?
how can you check whether Namenode is working beside using the jps command?
What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
In Map Reduce why map write output to Local Disk instead of HDFS?
What is a scarce system resource?
What are ‘reduces’?
Where sorting is done in Hadoop MapReduce Job?
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