Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

what are the steps involved in decommissioning removing

1015

What is the process to change the files at arbitrary locations in HDFS?

1418

What is difference between split and block in hadoop?

1396

How many JVMs run on a slave node?

1044

What is a block and block scanner in HDFS?

1030

What is compute and Storage nodes?

1024

how would you modify that solution to only count the number of unique words in all the documents?

973

How can you overwrite the replication factors in HDFS?

1247

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

1006

Knox and Hadoop Development Tools?

927

In which location Name Node stores its Metadata and why?

1393

Is a job split into maps?

1036

What are different hdfs dfs shell commands to perform copy operation?

1060

If a data Node is full how it's identified?

937

How many filters are available in HBase?

441

Un-Answered Questions { Big Data }

What is the default replication factor and how will you change it?

533

What is kafka in hadoop?

511

Can we deploye job tracker other than name node?

659

Replication causes data redundancy and consume a lot of space, then why is it pursued in hdfs?

What is azure spark?

295

List the benefits of Spark over MapReduce.

294

How to set the number of mappers to be created in MapReduce?

638

Mention what is ObjectInspector functionality in Hive?

741

What is Hive query processor?

919

Does if offer scaling?

What is the Reducer used for?

923

what is the default replication factor in HDFS?

1017

What are different Hive commands available for hive and beeline CLI?

725

How much data is enough to get valid outcome?

622

Explain HCatOutputFormat?

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