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Hadoop Interview Questions
Questions Answers Views Company eMail

What is MapReduce?

 1 1981

What MapReduce framework consists of?

 1 1203

Can we submit the mapreduce job from slave node?

 1 1218

How can we control particular key should go in a specific reducer?

 1 1027

How can you add the arbitrary key-value pairs in your mapper?

 1 1525

What is Reduce only jobs?

 1 1835

What is a IdentityMapper and IdentityReducer in MapReduce ?

 1 1041

Explain Working of MapReduce?

 1 1076

Write a Mapreduce Program for Character Count ?

 1 1141

how to proceed to write your first mapreducer program?

 1 1488

How to set the number of reducers?

 1 1468

Developing a MapReduce Application?

 1 1078

Different ways of debugging a job in MapReduce?

 1 1201

Explain the Reducer's reduce phase?

 1 1160

Why do we use HDFS for applications having large data sets and not when there are lot of small files?

 1 2894

Un-Answered Questions { Hadoop }

How to skip header rows from a table in Hive?

900

Where does the data of a Hive table gets stored?

744

How to set property in apache tajo?

41

Can free-form SQL queries be used with Sqoop import command? If yes, then how can they be used?

73

Can We Change settings within Hive Session? If Yes, How?

854

What is the function of UNION and SPLIT operators? Give examples?

620

What is the latest version of spark?

337

What is the stable version of Hive ?

2694

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

1074

How do I set up flume agent?

135

List the advantage of Parquet file in Apache Spark?

521

Give me the examples of Columnar database ?

667

When to choose "External Table" in Hive?

866

What is the latest version of ambari that is available in the present market?

111

When to use explode in Hive?

832

For More Un-Answered { Hadoop } Questions Click Here