What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
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Does Hadoop requires RAID?
What is the difference between SQL and NoSQL?
What problems can be addressed by using Zookeeper?
Is it necessary to write jobs for hadoop in the java language?
What are sink processors?
How does an hadoop application look like or their basic components?
What is the difference between traditional RDBMS and Hadoop?
What is Partioner in hadoop? Where does it run
What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?
What are the most commonly defined input formats in Hadoop?
How we can take Hadoop out of Safe Mode?
What is a Task instance in Hadoop? Where does it run?1
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