What are the configuration files in Hadoop?
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Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
Why Hadoop performs replication, although it results in data redundancy?
Can you explain combiner?
What does rack awareness mean?
How do you overwrite replication factor?
Explain how can you check whether namenode is working beside using the jps command?
What the information segments utilized by hadoop are?
How to debug Hadoop code?
Comparison between Secondary NameNode and Checkpoint Node in Hadoop?
Can you give a detailed overview about the Big Data being generated by Facebook?
What happen on the namenode when a client tries to read a data file?
Mention what is the difference between an rdbms and hadoop?
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