How can we control particular key should go in a specific reducer?
How to overwrite an existing output file during execution of mapreduce jobs?
What are the main components of MapReduce Job?
Why is Apache Spark faster than Hadoop MapReduce?
What is the difference between Hadoop and RDBMS?
What is the role of recordreader in hadoop mapreduce?
Is it possible to split 100 lines of input as a single split in MapReduce?
What is MapReduce? What are the syntax you use to run a MapReduce program?
MapReduce Types and Formats and Setting up a Hadoop Cluster?
how can you check whether Namenode is working beside using the jps command?
What is heartbeat in hdfs? Explain.
Define the Use of MapReduce?
Explain what combiners are and when you should use a combiner in a mapreduce job?