What is a commodity hardware? Does commodity hardware include RAM?
How can you set an arbitrary number of mappers to be created for a job in Hadoop?
Mention what is the difference between an rdbms and hadoop?
Explain what is hadoop?
Give me examples of unstructured data?
What are the side data distribution techniques?
What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?
How to handle bad records during parsing?
Can we deploye job tracker other than name node?
What are the most common OutputFormat in Hadoop?
How is the splitting of file invoked in Hadoop framework?
What are the differences between hadoop 1 and hadoop 2?
Explain Erasure Coding in Hadoop?
what is next step after mapper or maptask?
Do we require two servers for the namenode and the datanodes?