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Hadoop Interview Questions
Questions Answers Views Company eMail

Is kafka an etl tool?

 1 571

What language is apache kafka written in?

 1 627

What is zookeeper server?

 1 97

What is the difference between map and reduce?

 1 738

What is optimal size of a file for distributed cache?

 1 752

What can skew the mean?

 1 378

What is vectorized query execution?

 1 414

What is map side join?

 1 384

What does dag stand for?

 1 383

What is data ingestion pipeline?

 1 413

What is the difference between reducebykey and groupbykey?

 1 394

What is data skew and how do you fix it?

 1 420

Is databricks a database?

 1 433

Is databricks an etl tool?

 1 399

What is a databricks cluster?

 1 489

Un-Answered Questions { Hadoop }

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

859

When to choose "External Table" in Hive?

868

When to use explode in Hive?

832

What is the roadmap for apache driver version one.0?

81

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

75

What is a Hive variable? What for we use it?

881

When we are using queries instead of scripting?

801

What is the latest version of sqoop?

83

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

621

How do I set up flume agent?

145

What is the stable version of Hive ?

2696

What are the different types of tables available in Hive?

767

How can you import only a subset of rows from a table?

74

Give me the examples of Columnar database ?

669

How you can contact your client everyday ?

1042

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