Why do we need Hadoop?
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Explain Erasure Coding in Hadoop?
Do we require two servers for the namenode and the datanodes?
What does the high availability of a name-node means? How is it accomplished?
What is throughput in Hadoop?
What are the core components of Hadoop?
How to debug Hadoop code?
What are the network requirements for hadoop?
What does hadoop-metrics.properties file do?
What is the use of recordreader in hadoop?
What is Identity reducer?
Define “speculative execution” in hadoop?
What happen if one of the datanodes has much slower cpu?
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