What is a udf?
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What are the core components of Hadoop?
List of the some best tools that can be useful for data-analysis?
Clarify how ordering in hdfs is finished?
What kind of hardware is best for hadoop?
What is the difference between TextInputFormat and KeyValueInputFormat class?
What do you think about the speculative execution?
Mention how hadoop is different from other data processing tools?
Can you explain commodity hardware?
What are the features of Pseudo mode?
Which object can be used to get the progress of a particular job
What is namenode?
Can you explain combiner?
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