What is the difference between HDFS block and input split?
What is a scarce system resource?
How to optimize MapReduce Job?
How much space will the split occupy in Mapreduce?
What is the relationship between Job and Task in Hadoop?
what are the most common input formats defined in Hadoop?
MapReduce Types and Formats and Setting up a Hadoop Cluster?
What is the key- value pair in Hadoop MapReduce?
Explain what is the function of mapreduce partitioner?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
What is the input type/format in MapReduce by default?
When should you use sequencefileinputformat?