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 python stress test in cassandra?

What are partitions in cassandra?

Why is jconsole used?

102

what do you mean by compaction?

What is key-value store db?

What are the different types of primary key?

What is a primary key? And what are it’s different types?

Differentiate between the various types of primary keys in cassandra.

What are the different types of partitioners in cassandra?

What is a row in cassandra? And what are the different elements of it?

What are the different elements of jconsole?

What are partitions and tokens in cassandra?

Differentiate between static and dynamic cql tables.

What is key-value store db? Explain with an example.

101

What do you mean by replication factor?

Un-Answered Questions { Hadoop }

What is the role of the zookeeper?

How to stop a partition form being queried?

1196

What are the different components of a Hive architecture?

870

How many maximum jvm can run on a slave node?

728

What is spark database?

347

How can one set space quota in Hadoop (HDFS) directory?

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

Explain the concept of resilient distributed dataset (rdd).

2072

How can you send some messages in kafka?

539

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

515

How will you connect Apache Spark with Apache Mesos?

284

How can the columns of a table in hive be written to a file?

750

What are the debugging tools used for Apache Pig scripts?

820

Can we deploy job tracker other than name node?

720

What is the role of the secondary namenode?

482

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