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What are the different commands used to startup and shutdown Hadoop daemons?
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Compare Hadoop and RDBMS?
Clarify what a task tracker is in hadoop?
After increasing the replication level, I still see that data is under replicated. What could be wrong?
Mention how hadoop is different from other data processing tools?
Name the most common Input Formats defined in Hadoop? Which one is default?
How many datanodes can run on a single Hadoop cluster?
Explain what is a sequence file in hadoop?
What is the difference between TextInputFormat and KeyValueInputFormat class?
What are 'slaves' and 'masters' in Hadoop?
List Hadoop’s three configuration files?
What is Small File Problem in Hadoop? How can it be resolved?
Name the operating system(s) which are supported for production hadoop deployment?
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