What is KeyValueTextInputFormat in Hadoop?
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Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
Give examples of some companies that are using Hadoop structure?
How to use combiner in hadoop ?
How does job tracker schedule a job for the task tracker?
What are the major differences between Hadoop 2 and Hadoop 3?
Explain how do you overwrite replication factor?
What is Erasure Coding in Hadoop?
What do you know about the speculative execution?
Can we deploy job tracker other than name node?
What is the default replication factor in Hadoop and how will you change it?
Explain what is hadoop?
Which port does SSH work on?
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