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 is isr?

596

When does the queue full exception emerge inside the manufacturer?

537

Why apache kafka?

658

What happens if the preferred replica is not in the isr?

613

What is kafka logs?

621

What is kafka topic?

581

How message is consumed by consumer in kafka?

525

What are the relational databases supported in sqoop?

Use of import-all-tables command in hadoop sqoop?

Use of create-hive-table command in hadoop sqoop?

Use of list-tables command in hadoop sqoop?

Use of eval command in hadoop sqoop?

Use of list-databases command in hadoop sqoop?

What are the majorly used commands in sqoop?

Use of export command in hadoop sqoop?

Un-Answered Questions { Hadoop }

What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?

765

Name some companies that are already using Spark Streaming?

282

What is streaming?

734

What do you understand by cluster in cassandra?

what are the steps involved in commissioning adding

949

Is kafka big data?

517

How can you import only a subset of rows from a table?

What is the difference between the external table and managed table?

754

Which data storage components are used by hadoop?

702

Can impala do user-defined functions (udfs)?

What are the applications of Apache ZooKeeper?

What is Safemode in Apache Hadoop?

781

Why Do We Need Apache Pig?

689

How do we write our own custom serde?

748

What is an Agent?

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