What is a speculative execution in Apache Hadoop MapReduce?
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What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
Mention what are the data components used by Hadoop?
What is IdentityMapper?
Mention what is the number of default partitioner in Hadoop?
How does NameNode tackle DataNode failures?
What happens to a namenode, when job tracker is down?
If a data Node is full how it's identified?
Explain the features of stand alone (local) mode?
Define a daemon?
Explain the core components of hadoop?
How is the distance between two nodes defined in Hadoop?
Define a metadata?
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