what job does the conf class do?
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how can you check whether Namenode is working beside using the jps command?
Mention what is the hadoop mapreduce apis contract for a key and value class?
What do you understand by mapreduce?
How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?
What is Data Locality in Hadoop?
Explain the differences between a combiner and reducer
What is shuffling and sorting in mapreduce?
When is the reducers are started in a MapReduce job?
what are the basic parameters of a Mapper?
Where sorting is done on mapper node or reducer node in MapReduce?
What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?
How to compress mapper output in Hadoop?
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