What are the main components of hadoop?
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Can you define udf?
What is Slot in Hadoop v1? Why was it removed from Hadoop v2?
Can you explain logistic regression?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
What is Erasure Coding in Hadoop?
What is the difference between TextInputFormat and KeyValueInputFormat class?
What is a record reader?
Mention what is rack awareness?
What are the four modules that make up the Apache Hadoop framework?
How namenode handles data node failures?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
Explain what is sequencefileinputformat?
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