What is Mapper in Hadoop?
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What are the features of Standalone (local) mode?
Which object can be used to get the progress of a particular job
What is NameNode? How NameNode tackle Datanode failures in Hadoop?
Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?
What is replication factor?
What are the port numbers of task tracker?
What do you know about yarn?
What is active and passive NameNode in Hadoop?
Can you give a detailed overview about the Big Data being generated by Facebook?
In which location name node sores its metadata and why?
What is the procedure for namenode recovery?
Which language is more suitable for text analytics? R or python?
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