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

Big Data Interview Questions

Questions Answers Views Company eMail

Mention key components of Hive Architecture?

850

what Hive query processor does?

667

What does the following query do? Insert overwrite table employees partition (country, state) select ..., Se.cnty, se.st from staged_employees se;

921

While loading data into a hive table using the load data clause, how do you specify it is a hdfs file and not a local file ?

734

What is a table generating function on hive?

714

As part of optimizing the queries in hive, what should be the order of table size in a join query?

697

When to use Hive?

701

Explain what is Hive?

708

What types of costs are associated in creating index on hive tables?

839

What happened after creating a table in hive ?

731

What is a generic udf in hive?

733

Does the archiving of hive tables give any space saving in hdfs?

910

What is the need for custom serde?

735

What are the three different modes in which hive can be run?

677

What is the usefulness of the distributed by clause in hive?

735

Un-Answered Questions { Big Data }

What is metadata storage service in bookkeeper?

Would you be able to change the block size of hdfs files?

How can you debug a pig script?

595

Does Spark provide the storage layer too?

278

What is the difference between Cassandra, Pig and Hive?

987

What is the difference between dataset and dataframe in spark?

364

shouldn't DFS be able to handle large volumes of data already?

1067

What port does spark use?

316

How can we have to see the all hosts that are available in the ambari?

Write command to copy a file from HDFS to linux(local).

Explain the term commitlog?

Can we run unix shell commands from the hive? Give example?

746

Mention what is the benefits of apache kafka over the traditional technique?

613

how you can reduce churn in ISR? When does broker leave the ISR?

619

What is the difference between Caching and Persistence in Apache Spark?

323

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