Apache Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

On which port does ssh work?

737

Do we need to give a password, even if the key is added in ssh?

727

What are the port numbers of namenode, job tracker and task tracker?

712

Is fs.mapr.working.dir a single directory?

683

How can we look for the namenode in the browser?

717

What do slaves consist of?

667

How can we check whether namenode is working or not?

659

What happens to job tracker when namenode is down?

668

How can I restart namenode?

720

What do masters consist of?

694

What if a namenode has no data?

667

Which are the three main hdfs-site.xml properties?

665

What is formatting of the dfs?

828

In cloudera there is already a cluster, but if I want to form a cluster on ubuntu can we do it?

737

Does this lead to security issues?

740

Post New Apache Hadoop Questions

Un-Answered Questions { Apache Hadoop }

Name some companies that use Hadoop?

955

What is the jobtracker and what it performs in a hadoop cluster?

637

What is zookeeper in hadoop?

646

What infrastructure do we need to process 100 TB data using Hadoop?

1005

Can we do online transactions(oltp) using hadoop?

669

How to change Replication Factor For below cases ?

1085

How to enable/configure the compression of map output data in hadoop?

766

explain Metadata in Namenode?

917

What is Derby database?

902

What are active and passive "NameNodes"?

1465

Does google use hadoop?

672

What is your favourite tool in the hadoop ecosystem?

958

Should we use RAID in Hadoop or not?

1058

What are the benefits of block transfer?

994

Explain use cases where SequenceFile class can be a good fit?

941

For More Un-Answered { Apache Hadoop } Questions Click Here