According to IBM, what are the three characteristics of Big Data?
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How often DataNode send heartbeat to NameNode in Hadoop?
What is Small File Problem in Hadoop? How can it be resolved?
Explain how jobtracker schedules a task?
Explain the Single point of Failure in Hadoop?
When we send a data to a node, do we allow settling in time, before sending another data to that node?
What is the use of recordreader in hadoop?
What is job tracker role in hadoop?
How does job tracker schedule a job for the task tracker?
Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?
What happen if a datanode loses network connection for a few minutes?
What is Erasure Coding in Hadoop?
What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
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