How do ‘map’ and ‘reduce’ work?
When Namenode is down what happens to job tracker?
Why Hadoop MapReduce?
How to change a number of mappers running on a slave in MapReduce?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
Write a Mapreduce Program for Character Count ?
What do you mean by inputformat?
Can we rename the output file?
what job does the conf class do?
It can be possible that a Job has 0 reducers?
What is the InputSplit in map reduce ?
What combiners is and when you should use a combiner in a MapReduce Job?