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

Big Data Interview Questions

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Name some independent extensions that contribute to the Ambari codebase?

How can we see all the hosts that are available in Ambari?

Explain future growth of Apache Ambari?

Can we use Ambari Python Client to use of Ambari API’s?

Which command is used to list all the tables in a database or list all the columns in a table?

Explain HCatLoader APIs?

Explain HCatInputFormat and HCatOutputFormat?

Explain HCatStorer APIs?

Explain HCatWriter?

Name all HCatalog Features?

State syntax of the command to drop an index?

Name Applications and Use Cases of HCatalog?

Which command is used to SHOW PARTITIONS lists in HCatalog?

Explain HCatReader?

What is the role of data transfer API in HCatalog?

Un-Answered Questions { Big Data }

Explain accumulators in apache spark.

2079

What is a spark context?

274

Name some Big Data products?

585

How much faster is Apache spark than Hadoop?

294

What is the Reducer used for?

935

What are the advantages of DataSets?

293

Does the HDFS go wrong? If so, how?

What are the management tools in Cassandra?

Difference between mapreduce and spark

692

What is sparksession and sparkcontext?

273

What are the differences between Caching and Persistence method in Apache Spark?

314

What is the process to change the files at arbitrary locations in HDFS?

1425

What is the difference between a node, a cluster, and data centre?

255

Why big data use?

583

What are the main methods of data transferring in hadoop sqoop?

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