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 function of consistency cqlsh command in Cassandra?

What is Cassandra-CQL collection?

What is CQLSH in Cassandra?

What are the benefits/ advantages of Cassandra?

Explain when to use explode in Hive?

709

Why do we need buckets?

731

What is the difference between Internal Table and External Table in Hive?

735

what are the different modes of Hive?

718

In Hive, can you overwrite Hadoop MapReduce configuration in Hive?

784

Explain how can you change a column data type in Hive?

706

When should we use SORT BY instead of ORDER BY?

702

Mention how can you stop a partition form being queried?

1126

Mention if we can name view same as the name of a Hive table?

695

What are Features of Hive?

732

Difference between HBase vs Hive?

733

Un-Answered Questions { Hadoop }

What does adminclient api in kafka?

530

When you should use Hbase?

914

Explain the hdfs architecture?

Why do we need Pig?

832

How does gossip protocol work?

What are the benefits yarn brings in to hadoop?

434

How Pig programming gets converted into MapReduce jobs?

624

State some Ambari components which we can use for automation as well as integration?

110

Explain how indexing in hdfs is done?

What are the port numbers of namenode, job tracker and task tracker?

723

How to write a custom partitioner for a Hadoop MapReduce job?

662

Mention how can you stop a partition form being queried?

1126

What is a keyspace in Cassandra?

103

What are combiners and its purpose?

943

What are the abstractions of Apache Spark?

307

For More Un-Answered { Hadoop } Questions Click Here