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

Big Data Interview Questions

Questions Answers Views Company eMail

How would you drop a table in Hive?

725

When a large data set is maintained?

719

What is Bucket in Hive?

721

When you are dealing with static data instead of dynamic data?

736

What is Hive Database?

703

Is it possible to overwrite Hadoop MapReduce configuration in Hive?

715

Is it possible to use same metastore by multiple users, in case of embedded hive?

659

When executing Hive queries in different directories, why is metastore_db created in all places from where Hive is launched?

837

What is the functionality of Query Processor in Apache Hive?

758

What is the difference between Hive CLI and Beeline?

840

What kind of data warehouse application is suitable for Hive? What are the types of tables in Hive?

724

Give examples of the SerDe classes whihc hive uses to Serializa and Deserilize data?

736

How can you prevent a large job from running for a long time? What do u think is more popular among the developers - Pig or Hive?

662

Differentiate between describe and describe extended?

700

What is sample Query in Hive?

701

Un-Answered Questions { Big Data }

Why do we use spark?

329

Do I need to know scala to learn spark?

362

How is dag created in spark?

289

What is the use of “void close()” method?

Can we say a COGROUP is a group of more than 1 data set?

555

Explain the filter transformation?

311

Is there a dual table?

What is a generic UDF in the hive?

757

Explain mappartitions() and mappartitionswithindex()?

424

What is the throughput? How does hdfs give great throughput?

Wherever (Different Directory) I run hive query, it creates new metastore_db, please explain the reason for it?

663

In which language apache kafka is written?

534

Where is Mapper output stored?

855

What is Disk Balancer in Hadoop?

513

Define streaming?

660

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