Define “speculative execution” in hadoop?
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Name the most common Input Formats defined in Hadoop? Which one is default?
What are the important features of hadoop?
What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?
What are the modes in which Hadoop run?
How analysis of Big Data is useful for organizations?
what is next step after mapper or maptask?
How to specify more than one path for storage in Hadoop?
Compare Hadoop 2 and Hadoop 3?
Explain how do you overwrite replication factor?
Explain what is a task tracker in hadoop?
Clarify what is sequence file input format?
List Hadoop’s three configuration files?
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