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 should be the ideal replication factor in Hadoop Cluster?

2 3201

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

1151

What is a Record Reader in hadoop?

1008

What is version-id mismatch error in hadoop?

1083

how to share the metastore within multiple users?

961

How do you define "block" in HDFS?

959

Where is the Mapper Output intermediate kay-value data stored ?

1408

What is Distributed Cache?

937

What problems have you faced when you are working on Hadoop code?

1015

What is HDFS - Hadoop Distributed File System?

1003

What are the most commonly defined input formats in Hadoop?

1099

What does /var/hadoop/pids do?

1322

What is the use of Combiner?

1011

what is SPF?

1554

what are Task Tracker and Job Tracker?

1120

Post New Apache Hadoop Questions

Un-Answered Questions { Apache Hadoop }

What is HDFS High Availability?

1011

What is the relation between job and task in hadoop?

705

What is the sequencefileinputformat in hadoop?

756

Can Hadoop be compared to NOSQL database like Cassandra?

955

What exactly is hadoop?

725

Explain the difference between NameNode

971

when hadoop enter in safe mode?

790

Why password is needed in ssh localhost?

845

Can hbase run without hadoop?

789

Does this lead to security issues?

771

What is a heartbeat in HDFS?

972

What do the master class and the output class do?

701

What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

1138

What is high availability in hadoop?

710

What is Rack Awareness in Apache Hadoop?

851

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