What is a combiner in hadoop?
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Give a brief overview of Hadoop history?
What is TextInputFormat in Hadoop?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
What are the functionalities of jobtracer?
How Hadoop is cost-effective?
What is the relationship between Jobs and Tasks in Hadoop?
Explain the key benefits of using storm for real time processing?
What are the core methods of a Reducer?
Explain InputSplit in Hadoop?
How will you write a custom partitioner for a Hadoop job?
Define a record reader?
Can you explain textinformat?
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