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

Big Data Interview Questions

Questions Answers Views Company eMail

State syntax of the command that is used to drop a partition?

1 11

Explain HCatInputFormat?

1 11

What are the main classes of Data Transfer API?

1 12

Explain Creating an Index?

1 13

What is the no. Of threads created by impala?

1 49

What is impala’s aggregation strategy?

1 54

What does impala do for fast access?

1 50

How is impala metadata managed?

1 47

What size is recommended for each node?

1 217

What impala use for authentication?

1 43

Can impala do user-defined functions (udfs)?

1 42

What is used to store data generally?

1 42

State use cases of impala?

1 50

How do I load a big csv file into a partitioned table?

1 47

How does impala process join queries for large tables?

1 48

Un-Answered Questions { Big Data }

List the advantage of Parquet file in Apache Spark?

474

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

579

What is the latest version of spark?

288

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

When to use explode in Hive?

803

How you can contact your client everyday ?

1013

What are the different types of tables available in Hive?

745

What is the stable version of Hive ?

2673

Which modes can Hadoop be run in? List a few features for each mode?

517

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

1059

What is meant by Transformation? Give some examples.

328

When to choose "External Table" in Hive?

847

How to skip header rows from a table in Hive?

872

How can you set an arbitrary number of Reducers to be created for a job in Hadoop?

519

State some DDL Command with brief Description?

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