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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

What does flatten do in pig?

716

Can you join multiple fields in apache pig scripts?

583

Differentiate between piglatin and hiveql?

571

Compare apache pig and sql?

566

What do you know about the case sensitivity of apache pig?

456

Explain about the bloommapfile?

621

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

509

How do users interact with the shell in apache pig?

537

What is illustrate used for in apache pig?

594

What are some of the apache pig use cases you can think of?

498

What kinds of impala queries or data are best suited for hbase?

Is impala intended to handle real time queries in low-latency applications or is it for ad hoc queries for the purpose of data exploration?

Can I do trforms or add new functionality?

Why does my insert statement fail?

Is impala production ready?

Un-Answered Questions { Hadoop }

What is a udf?

448

How hdfa differs with nfs?

741

Is it possible to change the default location of a managed table?

732

How does apache spark work?

297

Explain the top() and takeordered() operation?

327

What do you use spark for?

355

What is the use of tools command?

198

What is Federation?

415

How will you make changes to the default configuration files?

963

What does the mapred.job.tracker command do?

425

Explain what is a keyspace in Cassandra?

What are file permissions in HDFS and how HDFS check permissions for files or directory?

What are the data manipulation commands of hbase?

201

What do you know about schemardd?

310

What is spark in big data?

304

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