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What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
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Explain in which directory hadoop is installed?
What mode(s) can hadoop code be run in?
What is KeyValueTextInputFormat in Hadoop?
Whats the default port that jobtrackers listens ?
Which one is default?
What do you understand by standalone (or local) mode?
What are the important modes of hadoop?
What is the command to change the replication factor ?
Name the files which are used by the startup and shutdown commands?
While starting hadoop services, datanode service is not running?
Ideally what should be the replication factor in hadoop?
Mention how hadoop is different from other data processing tools?
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