What is the purpose of DataNode block scanner?
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What is MapFile?
How many instances of tasktracker run on a hadoop cluster?
What is 'Key value pair' in HDFS?
How can we check whether namenode is working or not?
How can we look for the namenode in the browser?
Explain how input and output data format of the hadoop framework?
What alternate way does HDFS provides to recover data in case a Namenode
How to exit the vi editor?
Explain what if rack 2 and datanode fails?
What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
Why is Apache Spark faster than Apache Hadoop?
Explain what is sqoop in Hadoop ?
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