What happen on the namenode when a client tries to read a data file?
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What are the features of Pseudo mode?
Mention what are the most common input formats defined in hadoop?
What is LazyOutputFormat in Hadoop?
What does the high availability of a name-node means?
How does speculative execution work in Hadoop?
Why aggregation cannot be done in Mapper?
What is the command to change the replication factor ?
Can you explain hadoop streaming?
What is the purpose of context object?
Explain what is namenode in hadoop?
How is the splitting of file invoked in Hadoop ?
In hadoop_pid_dir, what does pid stands for?
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