How the Client communicates with HDFS?
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What is Disk Balancer in Apache Hadoop?
What do you understand from Node redundancy and is it exist in hadoop cluster?
What is HDFS Block size? How is it different from traditional file system block size?
Is fs.mapr.working.dir a single directory?
What alternate way does HDFS provides to recover data in case a Namenode
Explain why do we need hadoop?
What are the Basics of Hadoop?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
What will you do when NameNode is down?
What are sink processors?
What is the jobtracker and what it performs in a hadoop cluster?
How can we look for the namenode in the browser?
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