Explain the general mapreduce algorithm
Different ways of debugging a job in MapReduce?
What is a "reducer" in Hadoop?
What is a Speculative Execution in Hadoop MapReduce?
How does fault tolerance work in mapreduce?
how Hadoop is different from other data processing tools?
What is Output Format in MapReduce?
What is the key- value pair in Hadoop MapReduce?
What is the best way to copy files between HDFS clusters?
Why is output file name in Hadoop MapReduce part-r-00000?
Why Hadoop MapReduce?
What is a RecordReader in Hadoop MapReduce?
What happens when the node running the map task fails before the map output has been sent to the reducer?