What is Slot in Hadoop v1? Why was it removed from Hadoop v2?
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Clarify how job tracker schedules an assignment?
What are the side data distribution techniques?
Give me examples of unstructured data?
What is the command to change the replication factor ?
Why do the nodes are removed and added frequently in a hadoop cluster?
What are the different commands used to startup and shutdown Hadoop daemons?
What does secondary name-node means?
Mention what does the text input format do?
Why Hadoop performs replication, although it results in data redundancy?
What is the default replication factor in Hadoop and how will you change it?
How can one write custom record reader?
Why slaves limited to 4000 in hadoop version 1?
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