What if rack 2 and datanode fails?
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What are sink processors?
what is a datanode?
Whats is distributed cache in hadoop?
What is the meaning of speculative execution in Hadoop? Why is it important?
What is output format in hadoop?
What is a speculative execution in Apache Hadoop MapReduce?
What are the four characteristics of Big Data?
Explain what happens in textinformat ?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is inputsplit in hadoop? Explain.
What if a namenode has no data?
How does an hadoop application look like or their basic components?