Can we create a hadoop cluster from scratch?
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Explain edge nodes in hadoop?
What is structured and unstructured data?
What is LazyOutputFormat in Hadoop?
What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?
What is purpose of RecordWriter in Hadoop?
Define a udf?
What is Chain Mapper?
Can you explain the common input formats in hadoop?
Ideally what should be the block size in hadoop?
What are the important modes of hadoop?
Can I set the number of reducers to zero?
How to restart NameNode or all the daemons in Hadoop?
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