What are the common types of NOSQL data bases ?
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What is the role of the secondary namenode?
What are 'slaves' and 'masters' in Hadoop?
If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?
What is streaming access?
What is job tracker role in hadoop?
Explain how can you debug hadoop code?
If DataNode increases, then do we need to upgrade NameNode in Hadoop?
How to do ‘map’ and ‘reduce’ works?
What are the network requirements for hadoop?
What does the high availability of a name-node means?
What is the best practice to deploy the secondary name node?
Explain map-only job?
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