How to create a custom key and custom value in MapReduce Job?
How does MapReduce framework view its input internally?
MapReduce Types and Formats and Setting up a Hadoop Cluster?
What happen if the number of the reducer is 0 in MapReduce?
What is the difference between Hadoop and RDBMS?
What is an identity mapper and identity reducer?
Why is Apache Spark faster than Hadoop MapReduce?
How do reducers communicate with each other?
What is heartbeat in hdfs? Explain.
What comes in Hadoop 2.0 and MapReduce V2 YARN
What is the job of blend () and repartition () in Map Reduce?
Where the mapper's intermediate data will be stored?
What is heartbeat in hdfs?