What is the function of ApplicationMaster?
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Command to format the NameNode?
Define a task tracker?
Explain the Job OutputFormat?
Which are the three main hdfs-site.xml properties?
What is Rack awareness?
What are the problems with Hadoop 1.0?
What is Distributed Cache?
What are different types of filesystem?
What is IdentityMapper?
What is partioner in hadoop? Where does it run,mapper or reducer?
What is the meaning of speculative execution in Hadoop? Why is it important?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
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