List out Hadoop's three configuration files?
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When Namenode is down what happens to job tracker?
What combiners are and when you should utilize a combiner in a map reduce job?
When is it not recommended to use MapReduce paradigm for large scale data processing?
what is distributed cache in mapreduce framework?
What is a Distributed Cache in Hadoop?
What is reduce side join in mapreduce?
What is the difference between map and reduce?
What do you know about nlineinputformat?
What is the use of InputFormat in MapReduce process?
For a Hadoop job, how will you write a custom partitioner?
How does fault tolerance work in mapreduce?
How do you stop a running job gracefully?
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