Explain the core components of hadoop?
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What are sink processors?
Is hadoop open source?
In which location Name Node stores its Metadata and why?
Does this lead to security issues?
What are the network requirements for using hadoop?
How does NameNode tackle DataNode failures?
What are the problems with Hadoop 1.0?
What if a namenode has no data?
Define fault tolerance?
What is HDFS Federation?
Should we use RAID in Hadoop or not?
What is the sequencefileinputformat in hadoop?
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