What is zookeeper in hadoop?
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Explain the hadoop-core configuration?
what are the nodes in the Hadoop cluster?
How many maximum jvm can run on a slave node?
What if rack 2 and datanode fails?
Does hadoop always require digital data to process?
What is the difference between SQL and NoSQL?
What happens to job tracker when namenode is down?
how is a file of the size 1 GB uncompressed
What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
What is the communication channel between client and namenode/datanode?
What is HDFS block size and what did you chose in your project?
What are the functions of NameNode?
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