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

Define Cassandra?

What are the parameters used to create a keyspace?

114

Describe Network Topology Strategy?

138

Give the difference between Drop and Truncate in CQLSH?

How can a user get the information on the version of CQLSH?

Define Simple Strategy?

159

Give a list of Collection data type in Cassandra?

Describe JMX?

How can a user create a Keyspace in Cassandra?

Define primary key in Apache Cassandra?

Define Thrift in Apache Cassandra?

Name different types of the data model?

Give the difference between Column and SuperColumn?

145

Define durable writes?

Define Compaction?

Un-Answered Questions { Hadoop }

What bit version that ambari needs and also list out the operating systems that are compatible?

What is the port number for NameNode

887

What is sink in flume?

What are the four essential parameters of a mapper?

708

Differentiate between GROUP and COGROUP operators?

678

What are the relational operators available related to combining and splitting in pig language?

751

What are the all tasks we can perform for managing services using the ambari service tab?

Elucidate the concept of cap theorem?

what is the default replication factor in HDFS?

1053

What is pyarrow?

425

How can you control the number of mappers used by the sqoop command?

what does the text input format do?

865

When should you not use Cassandra? OR When to use RDBMS instead of Cassandra?

132

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

What are the views in Hive?

701

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