Accenture Hadoop Interview Questions
- How will you decide whether you need to use the Capacity Scheduler or the Fair Scheduler?
- What are the daemons required to run a Hadoop cluster?
- How will you restart a NameNode?
- Explain about the different schedulers available in Hadoop.
- List few Hadoop shell commands that are used to perform a copy operation.
- What is jps command used for?
- What are the important hardware considerations when deploying Hadoop in production environment?
- How many NameNodes can you run on a single Hadoop cluster?
- What happens when the NameNode on the Hadoop cluster goes down?
- What is the conf/hadoop-env.sh file and which variable in the file should be set for Hadoop to work
- Apart from using the jps command is there any other way that you can check whether the NameNode is working or not.
- Which command is used to verify if the HDFS is corrupt or not?
- List some use cases of the Hadoop Ecosystem
- I want to see all the jobs running in a Hadoop cluster. How can you do this?
- Is it possible to copy files across multiple clusters? If yes, how can you accomplish this?
- Which is the best operating system to run Hadoop?