How the HDFS Blocks are replicated?
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Which one is default InputFormat in Hadoop ?
What is Derby database?
What is partioner in hadoop? Where does it run,mapper or reducer?
What is a spill factor with respect to the ram?
What happens to a namenode, when job tracker is down?
Explain the basic architecture of Hadoop?
Why do we need a password-less ssh in fully distributed environment?
How many maximum jvm can run on a slave node?
Define a commodity hardware? Does commodity hardware include ram?
Name the various types of lists supported by bootstrap.
Which files are used by the startup and shutdown commands?
What is a “Distributed Cache” in Apache Hadoop?
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