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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

What is Rack awareness?

943

How will format the HDFS ?

947

what are the steps involved in commissioning adding

868

How to use Apache Zookeeper command line interface?

1062

Can NameNode and DataNode be a commodity hardware?

1636

What are the steps to submit a Hadoop job?

866

What is the heartbeat used for?

999

How would you tackle counting words in several text documents?

979

What are the Basics of Hadoop?

885

Explain the shuffle?

856

How blocks are distributed among all data nodes for a particular chunk of data?

1038

How can I install Cloudera VM in my system?

910

How we can take Hadoop out of Safe Mode?

IBM,

820

What is Writable & WritableComparable interface?

894

What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?

1028

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Un-Answered Questions { Apache Hadoop }

What are the two main components of ResourceManager?

1090

What is 'Key value pair' in HDFS?

903

What is the meaning of the term "non-DFS used" in Hadoop web-console?

1236

What is the jobtracker?

586

How many JVMs run on a slave node?

980

What happens to a NameNode that has no data?

1537

How does an hadoop application look like or their basic components?

654

Why password is needed in ssh localhost?

731

What happens to a namenode, when job tracker is down?

690

Name the examples of some companies that are using hadoop structure?

638

What is unstructured data?

602

what is a datanode?

881

What will you do when NameNode is down?

951

Can we call vms as pseudos?

621

What happens to job tracker when namenode is down?

631

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