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?

898

what Hive query processor does?

715

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

964

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 ?

770

What is a table generating function on hive?

766

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

739

When to use Hive?

765

Explain what is Hive?

770

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

883

What happened after creating a table in hive ?

778

What is a generic udf in hive?

775

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

967

What is the need for custom serde?

765

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

739

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

783

Un-Answered Questions { Big Data }

Define "Action" in Spark

317

Give the differences between the different types of primary keys in cassandra?

Write the command to copy a file from linux to hdfs?

What is zeromq?

566

Explain api create or replace tempview()?

351

In ambari what are the different life cycle commands?

Is there a date data type in Hive?

785

Mention the salient features of apache tajo ?

Define data integrity? How does hdfs ensure data integrity of data blocks stored in hdfs?

What are the different tasks we can perform managing host using ambari host tab?

What are the ways to create RDDs in Apache Spark? Explain.

328

What is safe mode in Hadoop?

1017

How can you add a new partition for the month December in the above partitioned table?

718

Is hive suitable to be used for oltp systems? Why?

847

What are the main properties of hdfs-site.xml file?

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