Explain how can you debug hadoop code?
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Can we use windows for hadoop?
What is distributed copy (distcp)?
Can you explain the common input formats in hadoop?
What is Small File Problem in Hadoop? How can it be resolved?
What is the job tracker role in hadoop?
What is the role of the secondary namenode?
If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
What do you know about yarn?
Give a brief overview of Hadoop history?
Define a udf?
How can we create a hadoop cluster from scratch?
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