What is HDFS Block size? How is it different from traditional file system block size?
Define fault tolerance?
What is Writable & WritableComparable interface?
What do you know about nlineoutputformat?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
In which location Name Node stores its Metadata and why?
Is a job split into maps?
Can you tell us more about ssh?
Explain the hadoop-core configuration?
What is small file problem in hadoop?
What are the modes in which Apache Hadoop run?
How blocks are distributed among all data nodes for a particular chunk of data?
Can we have multiple entries in the master files?