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 }

How to restart NameNode or all the daemons in Hadoop HDFS?

What is hbase in hadoop?

611

When should you use a reducer?

598

How is dag created in spark?

274

Explain about the execution pl of a pig script?
or
differentiate between the logical and physical plan of an apache pig script?

480

What is a "Spark Executor"?

327

Explain how indexing in hdfs is done?

What is a combiner in hadoop?

486

In mapreduce what is a scarce system resource? Explain?

628

What is catalyst query optimizer in apache spark?

283

How HDFS helps NameNode in scaling in Hadoop?

Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?

635

How is Flume-NG different from Flume 0.9?

Explain what is the role of the zookeeper?

467

What is a kafka cluster?

511

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