Should we use RAID in Hadoop or not?
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What is the purpose of RawComparator interface?
What is the best hardware configuration to run Hadoop?
What is keyvaluetextinputformat?
What is Hadoop?
How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?
What is the purpose of DataNode block scanner?
Explain the use of tasktracker in the hadoop cluster?
Define a metadata?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
what factors the block size takes before creation?
What are the two main components of ResourceManager?
What is a Task instance in Hadoop? Where does it run?1
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