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

Big Data Interview Questions

Questions Answers Views Company eMail

Give the sqoop command to see the content of the job named myjob?

How can you see the list of stored jobs in sqoop metastore?

What are the basic commands in Apache Sqoop and its uses?

How can you avoid importing tables one-by-one when importing a large number of tables from a database?

What is Sqoop Validation?

What is Sqoop Job?

What is the purpose of Sqoop List Tables?

Is it possible to add a parameter while running a saved job?

What is a disadvantage of using –direct parameter for faster data load by sqoop?

How will you update the rows that are already exported?

Difference Between Apache Sqoop vs Flume?

What is the default extension of the files produced from a sqoop import using the –compress parameter?

Where can the metastore database be hosted?

Which database the sqoop metastore runs on?

What are Watches in ZooKeeper?

Un-Answered Questions { Big Data }

Explain write ahead log(journaling) in spark?

284

What are the three characteristics of big data according to ibm?

526

Why should we use presto?

What is transformation in spark?

341

what Hive is composed of ?

729

Can you tell us how many daemon processes run on a hadoop system?

643

How is HCatalog different from Hive?

722

What is an accumulator in spark?

316

Is hive an impala requirement?

If there is certain data that we want to use again and again in different transformations, what should improve the performance?

322

Is it necessary to know java to learn hadoop?

712

Compare Apache Hadoop and Apache Spark?

485

What is cqlsh? And why is it used?

What is distributed copy (distcp)?

533

What is a partition in Hive?

954

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