What is Disk Balancer in Hadoop?
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If the hadoop administrator needs to make a change, which configuration file does he need to change?
What is the relationship between Jobs and Tasks in Hadoop?
What are the port numbers of task tracker?
Can you define udf?
How job tracker schedules an assignment?
What is the difference between TextinputFormat and KeyValueTextInputFormat class?
List out some common problems faced by data analyst?
Is nosql follow relational db model?
What is the purpose of context object?
What did mean by data-node?
What are the features of Pseudo mode?
Is Namenode machine same as DataNode machine as in terms of hardware?
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