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What is Distributed Cache in Hadoop?
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How do you overwrite replication factor?
What is meant by streaming access?
What is the block size in Hadoop?
Can you explain hadoop streaming?
What happen on the namenode when a client tries to read a data file?
What are the important modes of hadoop?
Are there any special requirements for namenode?
What are the major differences between Hadoop 2 and Hadoop 3?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
If DataNode increases, then do we need to upgrade NameNode?
What type of data we should put in distributed cache? When to put the data in dc? How much volume we should put in?
What happen if a datanode loses network connection for a few minutes?
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