How to handle bad records during parsing?
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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.?
what if job tracker machine is down?
What daemons run on master nodes?
What are the configuration files in Hadoop?
Do we need to place 2nd and 3rd data in rack 2 only?
How many InputSplits will be made by hadoop framework?
What are the network requirements for hadoop?
Ideally what should be replication factor in a Hadoop cluster?
What is NameNode? How NameNode tackle Datanode failures in Hadoop?
Why is checkpointing important in hadoop?
Explain what is a sequence file in hadoop?
Where are hadoop’s configuration files located and list them?
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