What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
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Name some companies that use Hadoop?
How to resolve small file problem in hdfs?
How you can contact your client everyday ?
What will you do when NameNode is down?
What problems can be addressed by using Zookeeper?
How Mapper is instantiated in a running job?
Can you tell us more about ssh?
Explain InputFormat?
What are the two main components of ResourceManager?
Rack awareness of Namenode?
On what basis data will be stored on a rack?
What is the use of combiners in the hadoop framework?
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