How many datanodes can run on a single Hadoop cluster?
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What is replication factor?
Can you define a checkpoint?
Why Hadoop performs replication, although it results in data redundancy?
Mention how many inputsplits is made by a hadoop framework?
We have already sql then why nosql?
What type of data hadoop can handle ?
What is a Heartbeat in Hadoop?
What are the different commands used to startup and shutdown Hadoop daemons?
What is structured and unstructured data?
Is it possible to have hadoop job output in multiple directories?
What happen on the namenode when a client tries to read a data file?
List Hadoop’s three configuration files?
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