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 }

Does spark need yarn?

242

What combiners is and when you should use a combiner in a MapReduce Job?

624

Name the most common Input Formats defined in Hadoop? Which one is default?

464

What does apache spark do?

322

What is the significance of Sliding Window operation?

308

What is the relationship between hdfs, hbase, pig, hive and azkaban?

510

Mention some machine learning algorithms exposed by mahout?

What are the window functions provided by apache tajo?

Is HDFS utilized in Cassandra? If yes, where?

Why Spark?

288

How do users interact with HDFS in Apache Pig ?

755

How apache spark works?

294

Explain ALTER Table statement in Hive?

707

Explain map-only job?

526

How can we control particular key should go in a specific reducer?

914

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