how can you check whether Namenode is working beside using the jps command?
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What is RecordReader in a Map Reduce?
What is the use of InputFormat in MapReduce process?
What is Shuffling and Sorting in a MapReduce?
Explain how do ‘map’ and ‘reduce’ work?
List the network requirements for using Hadoop ?
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Explain about the partitioning, shuffle and sort phase in MapReduce?
What are the various InputFormats in Hadoop?
How to set mappers and reducers for Hadoop jobs?
Is it important for Hadoop MapReduce jobs to be written in Java?
How can we control particular key should go in a specific reducer?
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