What is your favourite tool in the hadoop ecosystem?
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What if rack 2 and datanode fails?
What happens to a namenode, when job tracker is down?
What is salary of hadoop developer?
Explain the hadoop-core configuration?
What is HDFS block size and what did you chose in your project?
What is the communication channel between client and namenode/datanode?
What is Rack awareness?
Have you ever used Counters in Hadoop. Give us an example scenario?
How can I restart namenode?
Give the use of the bootstrap panel.
what are the nodes in the Hadoop cluster?
Explain the basic difference between traditional rdbms and hadoop?
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