What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?
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What do you think about the speculative execution?
According to IBM, what are the three characteristics of Big Data?
What is purpose of RecordWriter in Hadoop?
What is difference between reducer and combiner?
What does jps command do in Hadoop?
Can you give some examples of Big Data?
What is a udf?
What are the most common OutputFormat in Hadoop?
Ideally what should be the block size in hadoop?
Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
What happens if you don?t override the mapper methods and keep them as it is?
Why do we need Hadoop?
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