What is the input type/format in MapReduce by default?
Explain slot in Hadoop Map-Reduce v1?
What is a map side join?
What is a partitioner and how the user can control which key will go to which reducer?
What is the difference between an RDBMS and Hadoop?
How to set mappers and reducers for Hadoop jobs?
Explain how mapreduce works.
Differentiate Reducer and Combiner in Hadoop MapReduce?
What is the difference between RDBMS with Hadoop MapReduce?
What is partitioner and its usage?
What is the relation between MapReduce and Hive?
What platform and Java version is required to run Hadoop?
Why Mapper runs in heavy weight process and not in a thread in MapReduce?