What is the purpose of button groups?
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What is a Task instance in Hadoop? Where does it run?1
Can we do online transactions(oltp) using hadoop?
What is a block and block scanner in HDFS?
Define streaming?
Whats is distributed cache in hadoop?
What should be the ideal replication factor in Hadoop Cluster?
Is hadoop a database?
What are the two main components of ResourceManager?
What do the master class and the output class do?
What is zookeeper in hadoop?
What is a namenode? How many instances of namenode run on a hadoop cluster?
Explain the features of pseudo mode?
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