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 the role of Consumer API?

549

Explain Multi-tenancy?

593

What is Data Log in Kafka?

858

Features of Kafka Stream?

553

What are Replication Tool and its types?

607

Explain how to Tune Kafka for Optimal Performance?

590

What do you mean by Stream Processing in Kafka?

553

Explain the role of Streams API?

589

how you can improve the throughput of a remote consumer?

653

What is kafka Producer?

580

What does it indicate if replica stays out of ISR for a long time?

757

What is Importance of Java in Apache Kafka?

592

Compare RabbitMQ vs Apache Kafka?

606

Why replication is required in Kafka?

550

what is the meaning of broker in Kafka?

604

Un-Answered Questions { Hadoop }

What does the following query do? Insert overwrite table employees partition (country, state) select ..., Se.cnty, se.st from staged_employees se;

964

What impala use for authentication?

Explain pigstorage function?

638

How do you stop a running job gracefully?

654

What alternate way does HDFS provides to recover data in case a Namenode, without backup, fails and cannot be recovered?

Why do we need apache spark?

300

UPPER or UCASE function in Hive with example?

861

Why hive does not store metadata information in hdfs?

1000

Can you explain heartbeat in hdfs?

What is Kundera in Cassandra?

What happens if you alter the block size of a column family on an already occupied database?

220

What is salting in spark?

434

Is spark streaming real time?

295

Do we need to install spark in all nodes?

285

What is a table generating function on hive?

763

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