Why do we use HDFS for applications having large data sets and not when there are lot of small files?1 971
What are the functions of NameNode?1 518
Which one is default InputFormat in Hadoop ?1 662
What is the main purpose of HDFS fsck command?
explain Metadata in Namenode?
what is the typical block size of an HDFS block?
How we can change Replication factor when Data is on the fly?
What will you do when NameNode is down?
What is the default replication factor?
How do you categorize a big data?
What is a namenode? How many instances of namenode run on a hadoop cluster?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
What is Hadoop serialization?
How can we look for the namenode in the browser?
What alternate way does HDFS provides to recover data in case a Namenode
What is a checkpoint?
What are the network requirements for using hadoop?
Knox and Hadoop Development Tools?