What is a namenode? How many instances of namenode run on a hadoop cluster?
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What does /etc /init.d do?
How to come out of the insert mode?
What is the problem with HDFS and streaming data like logs
What are the default configuration files that are used in hadoop?
Why is hadoop faster?
Define a datanode?
What is a task instance in hadoop? Where does it run?
What is inputsplit in hadoop? Explain.
What is Derby database?
Where is the Mapper Output stored?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
What is DistributedCache and its purpose?
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