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

Define the Use of Pig?

550

Can we say a COGROUP is a group of more than 1 data set?

555

What are the Applications of Apache Pig?

571

Bag in pig ?

575

Whether Pig Latin language is case-sensitive or not?

659

What are the relational operators available related to Grouping and joining in Pig language?

482

What are the primitive data types in Pig?

539

What is atom in pig?

538

What is UDF in Pig?

654

What is the purpose of ‘dump’ keyword in Pig?

626

What is Grunt shell?

579

Why do we use ‘filters’ Pig scripts?

613

How to fetch particular columns in pig?

588

What is the bag?

533

What is Flatten?

554

Un-Answered Questions { Hadoop }

If a data Node is full how it's identified?

937

What are the design goals of zookeeper?

How to Delete directory and files recursively from HDFS?

Explain what is difference between an input split and hdfs block?

If I create a folder in HDFS, will there be metadata created corresponding to the folder? If yes, what will be the size of metadata created for a directory?

What is ZooKeeper quorum?

What is spark yarn executor memoryoverhead?

370

How does hdfs give great throughput?

What is the meaning of speculative execution in Hadoop? Why is it important?

1056

What is ZooKeeper?

What is the InputFormat ?

1017

Where do you specify the Mapper Implementation?

1016

What is RDD Lineage?

417

What do you understand about yarn?

285

How Mapper is instantiated in a running job?

993

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