Can you define a checkpoint?
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Name the operating system(s) which are supported for production hadoop deployment?
Why slaves limited to 4000 in hadoop version 1?
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What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?
Give me examples of unstructured data?
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Mention how many inputsplits is made by a hadoop framework?
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What mode(s) can hadoop code be run in?
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