What is a heartbeat in HDFS?
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What do you understand from Node redundancy and is it exist in hadoop cluster?
How to change replication factor of files already stored in HDFS?
What is a namenode? How many instances of namenode run on a hadoop cluster?
what is difference between int and intwritable?
Explain how can we change the split size if our commodity hardware has less storage space?
What is the meaning of the term "non-DFS used" in Hadoop web-console?
What is Distributed Cache?
How is the option in Hadoop to skip the bad records?
What is the heartbeat used for?
Can we do online transactions(oltp) using hadoop?
What are the benefits of block transfer?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
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