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

Hadoop Interview Questions

Questions Answers Views Company eMail

How Sqoop word came? Sqoop is which type of tool and the main use of sqoop?

What is Sqoop Import Mainframe Tool and its Purpose?

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?

Un-Answered Questions { Hadoop }

Give some points of pig for hadoop ?

555

Explain join() operation in Apache Spark?

354

What are configuration files in Hadoop?

521

Describe how hbase uses zookeeper?

Which components are used for stream flow of data?

575

How does hdfs provides good throughput?

What is the difference between a hadoop database and relational database?

453

What is hbase in hadoop?

648

What are common spark ecosystems?

319

How we can change Replication factor when Data is on the fly?

1342

What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?

What is troubleshooting for impala?

What problem does Apache Pig solve?

801

Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?

1214

What is the need of key-value pair to process the data in MapReduce?

668

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