What is the InputFormat ?
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What are different types of filesystem?
What is HDFS Block size? How is it different from traditional file system block size?
What is the use of Combiner?
How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?
what factors the block size takes before creation?
Define tasktracker.
Who is a 'user' in HDFS?
Can Hadoop be compared to NOSQL database like Cassandra?
How hdfa differs with nfs?
What are the problems with Hadoop 1.0?
On what basis name node distribute blocks across the data nodes?
What is difference between regular file system and HDFS?
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