Mention what are the most common input formats defined in hadoop?
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What is the difference between TextinputFormat and KeyValueTextInputFormat class?
Explain the core methods of the reducer?
What are the Hadoop features extended to its eco-system components ?
Whats the default port that jobtrackers listens ?
Compare Apache Hadoop and Apache Spark?
What are the differences between hadoop 1 and hadoop 2?
What are the tools used in big data?
Tell me some major benefits of Hadoop?
Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
What is a record reader?
What are the side effects of not running a secondary name node?
When we send a data to a node, do we allow settling in time, before sending another data to that node?
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