I applied online. I interviewed at Learnbeyond Consulting (NJ ) (Jersey City, NJ)
Interview
It was okay, and the process went well. I interacted with fellow interviewees and learned more about the company!!!!!
Hadoop's storage unit is the Hadoop Distributed File System (HDFS). HDFS stores data in a distributed fashion. HDFS is made up of two parts: a name node and a data node. While there is only one name node, numerous data nodes are possible.
Interview questions [1]
Question 1
Why Hadoop? ( Compare to RDBMS) ...
What would happen if NameNode failed? How do you bring it up? ...
What details are in the “fsimage” file? ...
What is SecondaryNameNode? ...
Explain the MapReduce processing framework? (start to end) ...
What is Combiner? ...
What is Partitioner? ...
Oozie – What are the nodes?
