What is job tracker in Hadoop?
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How analysis of Big Data is useful for organizations?
Give me an example of document database ?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
Explain how do you overwrite replication factor?
What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?
Mention what is distributed cache in hadoop?
Why do we need Hadoop?
Mention what is data cleansing?
What is the role of the namenode?
How is security achieved in Hadoop?
Web-ui shows that half of the datanodes are in decommissioning mode. What does that mean? Is it safe to remove those nodes from the network?
Who are ‘Data Scientists’?
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