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Which one is default InputFormat in Hadoop ?
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What happens to a NameNode that has no data?
What is HDFS - Hadoop Distributed File System?
What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?
What is the purpose of RawComparator interface?
Explain the master class and the output class do?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
what are Task Tracker and Job Tracker?
How we can change Replication factor when Data is on the fly?
How a task is scheduled by a jobtracker?
How can one increase replication factor to a desired value in Hadoop?
How many Daemon processes run on a Hadoop system?
What is the meaning of speculative execution in Hadoop? Why is it important?
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