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

Explain Reliability and Failure Handling in Apache Flume?

107

Any two Limitations of Flume?

Types of Data Flow in Flume?

111

What are Flume core components?

What are the important steps in the configuration?

Can you define what is Event Serializer in Flume?

What are the Data extraction tools in Hadoop?

Explain data flow in Flume?

103

What are the similarities and differences between Apache Flume and Apache Kafka?

107

What is sink processors?

101

What is Purpose to Validate in Sqoop?

What is the purpose of sqoop-merge?

What is the usefulness of the options file in sqoop?

How can you control the mapping between SQL data types and Java types?

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

Un-Answered Questions { Hadoop }

What is PageRank in Spark?

287

What are Paired RDD?

331

When to avoid secondary indexes?

What is hector?

Why is rdd immutable?

327

What do you use spark for?

375

Mention the best features of Apache Sqoop?

How to change a number of mappers running on a slave in MapReduce?

837

What is flume and sqoop?

107

How to copy a file into HDFS with a different block size to that of existing block size configuration?

what is the maximum size of the message does Kafka server can receive?

569

Is databricks a database?

338

Explain the core methods of the reducer?

542

List few differences between apache kafka and rabbitmq?

602

What is the use of cloudera?

483

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