What the information segments utilized by hadoop are?
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How to use combiner in hadoop ?
Mention what are the three modes in which hadoop can be run?
What is Mapper in Hadoop?
How to restart NameNode or all the daemons in Hadoop?
While starting hadoop services, datanode service is not running?
What are the four basic parameters of a mapper?
What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?
If datanodes increase, then do we need to upgrade namenode?
Explain what is a sequence file in hadoop?
Why is checkpointing important in hadoop?
What is the difference between a hadoop database and relational database?
What is a commodity hardware? Does commodity hardware include RAM?
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