What is a udf?
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Can you explain record reader?
What does rack awareness algorithm means?
What happen if number of reducer is set to 0 in Hadoop?
What are the tools used in big data?
What is the default replication factor and how will you change it?
Why do we need hadoop for big data analytics?
What is a Heartbeat in Hadoop?
What is Federation?
What is the difference between TextinputFormat and KeyValueTextInputFormat class?
What is streaming in Hadoop?
Can you explain textinformat?
What webdav is in hadoop?
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