What are combiners and its purpose?
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what factors the block size takes before creation?
Is fs.mapr.working.dir a single directory?
What is Apache Hadoop?
On what basis Namenode will decide which datanode to write on?
How we can change Replication factor when Data is on the fly?
Define a metadata?
What is the difference between traditional RDBMS and Hadoop?
Mention what is the use of Context Object?
Can we do online transactions(oltp) using hadoop?
What is the purpose of RawComparator interface?
What does /etc /init.d do?
What do you know about keyvaluetextinputformat?