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 ?

147

Explain Cqlsh?

Define NoSQL Database?

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?

186

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 }

What is Speculative Execution in Apache Spark?

287

What do you mean by replication strategy?

What is partitioning key?

554

What is HDFS High Availability?

962

Can you define the process of creating ambari client?

What is the need of key-value pair to process the data in MapReduce?

668

What is the inputsplit in map reduce software?

621

What is spark table?

255

What does illustrate do in Apache Pig?

927

Explain the CLI In Zookeeper?

State use cases of impala?

Enlist the several components in Kafka?

654

What is Schema on Read and Schema on Write?

916

Is apache spark a tool?

270

What are the actions followed by hadoop?

466

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