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 relationship between Hadoop, HBase, Hive and Cassandra ?

149

Explain Cqlsh?

Define NoSQL Database?

104

What Platforms Cassandra runs on?

Give some advantages of Cassandra?

What is the use of “void close()” method?

What are the collection data types provided by CQL?

What is the use of “ResultSet execute(Statement statement)” method?

What do you mean by consistency in Cassandra?

190

Give the data storage units in Cassandra?

What is data replication in Cassandra?

When can you use ALTER KEYSPACE?

What is the concept of SuperColumn in Cassandra?

How many types of tunable consistency are supported in Cassandra?

Mention what are the values stored in the Cassandra Column?

Un-Answered Questions { Hadoop }

Define Thrift?

275

What does consumer api in kafka?

550

What are the various types of shared variable in apache spark?

309

What is a Consumer Group?

658

What is the importance of driver in hive?

755

What is a hive in big data?

705

How can I restart namenode?

758

When was spark introduced?

349

Can you explain record reader?

468

What does heartbeat in hdfs means?

What are the core benefits for hadoop users by using apache ambari?

How can we check whether namenode is working or not?

701

Explain the role of the Kafka Producer API?

567

What is compute and Storage nodes?

1056

What is the usage of "cqlsh-version" command?

158

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