Define “speculative execution” in hadoop?
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What is Distributed Cache in Hadoop?
Explain Hadoop streaming?
Explain how Hadoop cluster hardware planning and provisioning is done?
How analysis of Big Data is useful for organizations?
How many daemon processes run on a hadoop cluster?
Explain how can you debug hadoop code?
What is Small File Problem in Hadoop? How can it be resolved?
Why do the nodes are removed and added frequently in a hadoop cluster?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
What is the role of the namenode?
What is the key difference between NameNode and DataNode in Hadoop?
Ideally what should be replication factor in a Hadoop cluster?
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