Why do we need hadoop for big data analytics?
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What are the modes in which Hadoop run?
What is the default replication factor in Hadoop and how will you change it?
Explain map-only job?
Explain InputSplit in Hadoop?
Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?
Are there any special requirements for namenode?
How many InputSplits will be made by hadoop framework?
Name the most common Input Formats defined in Hadoop? Which one is default?
How is the splitting of file invoked in Hadoop ?
What is LazyOutputFormat in Hadoop?
Explain what is a sequence file in hadoop?
Explain the usage of Context Object?
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