What is partitioning in MapReduce?
Explain task granularity
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
what is NameNode in Hadoop?
Explain Working of MapReduce?
What is a distributed cache in mapreduce framework?
What do you know about nlineinputformat?
For a Hadoop job, how will you write a custom partitioner?
Whether the output of mapper or output of partitioner written on local disk?
Mention when to use Map reduce mode?
Explain what does the conf.setmapper class do?
Can we set the number of reducers to zero in MapReduce?
What is sqoop in Hadoop ?