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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

Explain the difference between NameNode

888

What other technologies have you used in hadoop sta ck?

934

what is difference between int and intwritable?

1418

What is Apache Hadoop YARN?

1419

What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?

1068

What are channel selectors?

960

What are the stable versions of Hadoop?

959

Input Split & Record Reader and what they do?

975

what is the default replication factor in HDFS?

978

How indexing is done in HDFS?

1028

Why are the number of splits equal to the number of maps?

912

What are the two main components of ResourceManager?

1104

How will you make changes to the default configuration files?

912

What are the different types of Znodes?

946

How many instances of JobTracker can run on a Hadoop Cluser?

975

Post New Apache Hadoop Questions

Un-Answered Questions { Apache Hadoop }

What is a secondary namenode?

580

What are the modules that constitute the Apache Hadoop 2.0 framework?

963

What is InputSplit and RecordReader?

879

What is the sequencefileinputformat in hadoop?

674

What are the important differences between apache and hadoop?

668

Can hive run without hadoop?

638

What Mapper does?

945

What is the main purpose of HDFS fsck command?

1730

What is Hadoop serialization?

639

How can we look for the namenode in the browser?

676

What is the port number for NameNode

801

Did you ever ran into a lop sided job that resulted in out of memory error

1175

How can one increase replication factor to a desired value in Hadoop?

1085

Why do we use Hadoop?

874

How does NameNode tackle DataNode failures?

1111

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