Name the operating system(s) which are supported for production hadoop deployment?
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what is next step after mapper or maptask?
What type of data hadoop can handle ?
How to do ‘map’ and ‘reduce’ works?
What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
What is namenode?
What are some typical functions of Job Tracker?
Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?
When should be hadoop archive create?
What is the key difference between NameNode and DataNode in Hadoop?
What are the port numbers of task tracker?
What are the hadoop configuration files at present?
Specify what the information segments utilized by hadoop are?
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