what is JobTracker in Hadoop? What are the actions followed by Hadoop?
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More MapReduce Interview Questions
What is the difference between RDBMS with Hadoop MapReduce?
how JobTracker schedules a task ?
What is SequenceFileInputFormat in Hadoop MapReduce?
Mention what is the hadoop mapreduce apis contract for a key and value class?
What is the difference between a MapReduce InputSplit and HDFS block?
How to sort intermediate output based on values in MapReduce?
What is the difference between Reducer and Combiner in Hadoop MapReduce?
What is the purpose of textinputformat?
What happens when a datanode fails ?
Why can aggregation not be done in Mapper in MapReduce?
How many Mappers run for a MapReduce job?
A number of combiners can be changed or not in MapReduce?
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