In hadoop_pid_dir, what does pid stands for?
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What are the functionalities of jobtracer?
In which location name node sores its metadata and why?
Mention what are the three modes in which hadoop can be run?
What does hadoop-metrics.properties file do?
Explain what happens when hadoop spawned 50 tasks for a job and one of the task failed?
Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?
What is throughput in Hadoop?
Can we change the file cached by distributed cache
What is the difference between TextInputFormat and KeyValueInputFormat class?
Explain small file problem in hadoop
Explain what is jobtracker in hadoop? What are the actions followed by hadoop?
What are the hadoop configuration files at present?
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