What is hadoop? Name the main components of a hadoop application?
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What are the restriction to the key and value class ?
What happen if a datanode loses network connection for a few minutes?
Explain small file problem in hadoop
Give me examples of unstructured data?
Mention what is data cleansing?
After increasing the replication level, I still see that data is under replicated. What could be wrong?
What is the best practice to deploy the secondary name node?
What is the most widely recognized info formats characterized in hadoop?
How can you set an arbitrary number of Reducers to be created for a job in Hadoop?
Explain is it possible to search for files using wildcards?
Name the files which are used by the startup and shutdown commands?
Clarify what webdav is in hadoop?
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