What are the hadoop's three configuration files?
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How does an hadoop application look like or their basic components?
What is a block and block scanner in HDFS?
What is your favourite tool in the hadoop ecosystem?
How many JVMs run on a slave node?
What is IdentityMapper?
What is Schema on Read and Schema on Write?
What are the port numbers of namenode, job tracker and task tracker?
Explain the basic architecture of Hadoop?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
What is the purpose of button groups?
Explain the core components of hadoop?
What are the problems with Hadoop 1.0?