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?

600

When does the queue full exception emerge inside the manufacturer?

541

Why apache kafka?

660

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

616

What is kafka logs?

623

What is kafka topic?

584

How message is consumed by consumer in kafka?

528

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 }

Do we need to give a password, even if the key is added in ssh?

768

What are the befefits of nosql over relational database?

How do you define a partitioning key?

574

What is Apache Spark?

390

Mention what is distributed cache in hadoop?

477

What is the advantage of hadoop over java serialization?

Why slaves limited to 4000 in hadoop version 1?

539

What do you mean by tunable consistency?

100

Define catalog tables in HBase?

218

Explain the Avro SASL Profile?

How hadoop mapreduce works?

698

Define the roles of the file system in any framework?

318

What is Apache Hive?

879

Where is the Mapper Output intermediate kay-value data stored ?

1414

what does the conf.setMapper Class do ?

869

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