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?

739

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?

673

How can I restart namenode?

722

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?

829

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 }

How can we check whether namenode is working or not?

659

What is a task instance in hadoop? Where does it run?

615

Explain why do we need hadoop?

660

How do you categorize a big data?

778

Can NameNode and DataNode be a commodity hardware?

1679

what are the steps involved in decommissioning removing

1015

How to enable recycle bin in hadoop?

766

Should we use RAID in Hadoop or not?

1058

Explain the features of pseudo mode?

703

Can hbase run without hadoop?

743

Is hadoop required for data science?

684

Explain what is sqoop in Hadoop ?

728

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

1018

What is the difference between Apache Hadoop and RDBMS?

807

What is the communication channel between client and namenode/datanode?

1734

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