What is the basic difference between traditional RDBMS and Hadoop?
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what happens when namenode goes down during file read operation in hadoop?
What is a rack?
How ordering in hdfs is finished?
What is structured and unstructured data?
What is JPS? Why is it used in Hadoop?
Why cloudera is used?
What is Fault Tolerance?
If datanodes increase, then do we need to upgrade namenode?
How namenode handles data node failures?
What is pseudo-distributed mode?
Explain what is a task tracker in hadoop?
What does hadoop-metrics.properties file do?
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