How we can change Replication factor when Data is on the fly?
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What infrastructure do we need to process 100 TB data using Hadoop?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
Is it necessary to write jobs for hadoop in the java language?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
What problems can be addressed by using Zookeeper?
What do you mean by taskinstance?
Can the balancer be run while Hadoop is in use?
Is hadoop open source?
How to enable/configure the compression of map output data in hadoop?
Is it necessary to know java to learn hadoop?
Explain the difference between NameNode
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