What are the side data distribution techniques?
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what is next step after mapper or maptask?
When and how to create hadoop archive?
Where are Hadoop’s configuration files located?
what if job tracker machine is down?
Can you explain combiner?
Define a udf?
What is difference between secondary namenode, checkpoint namenode & backupnode?
What type of data hadoop can handle ?
What daemons run on master nodes?
How job tracker schedules an assignment?
What is the difference between namenode and datanode in hadoop?
How to add/delete a Node to the existing cluster?
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