What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
What is Rack awareness?
What is the difference between traditional RDBMS and Hadoop?
Is hadoop a memory?
Explain what happens in textinformat ?
What alternate way does HDFS provides to recover data in case a Namenode
What is a namenode? How many instances of namenode run on a hadoop cluster?
Is client the end user in HDFS?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
What do shuffling do?
what is the typical block size of an HDFS block?
What are the steps to submit a Hadoop job?
How to enable recycle bin or trash in hadoop?