Explain how jobtracker schedules a task?
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What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?
How is security achieved in Hadoop?
Have you ever used counters in hadoop?
What are the tools used in big data?
How will you write a custom partitioner for a Hadoop job?
What are input format, input split & record reader and what they do?
What are the hadoop configuration files at present?
Name the most common input formats defined in hadoop?
Explain the common input formats in hadoop?
List of the some best tools that can be useful for data-analysis?
Which language is more suitable for text analytics? R or python?
If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?
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