What is a heartbeat in HDFS?
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More Apache Hadoop Interview Questions
How blocks are distributed among all data nodes for a particular chunk of data?
How is hadoop different from other data processing tools?
On what basis Namenode will decide which datanode to write on?
In which location Name Node stores its Metadata and why?
What is output format in hadoop?
Explain what is the purpose of RecordReader in Hadoop?
What are the functionalities of jobtracker?
What is HDFS Block size? How is it different from traditional file system block size?
What are the Basics of Hadoop?
Is hadoop a memory?
Does google use hadoop?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
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