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

How can multi-hop agent be set up in Flume?

118

What is Interceptor?

111

Is it possible to leverage real-time analysis of the big data collected by Flume directly? If yes, then explain how?

148

Explain the core components of Flume?

109

Explain about the different channel types in Flume. Which channel type is faster?

171

Apache Flume support third-party plugins also?

What is an Agent?

Explain about the replication and multiplexing selectors in Flume?

100

Differentiate between FileSink and FileRollSink?

107

Why are we using Flume?

Difference between Sqoop and Cassandra?

How are large objects handled in Sqoop?

How Sqoop can be used in a Java program?

How can you check all the tables present in a single database using Sqoop?

Is it possible to do an incremental import using Sqoop?

Un-Answered Questions { Hadoop }

Tell me some major benefits of Hadoop?

455

Is rdd type safe?

311

Explain what do you understand by cassandra- cql collections?

Explain what are the tools used in Big Data?

126

What is bloom filter?

Explain Alter Table Statement in HCatalog?

What do you understand by the parquet file?

294

How to enable trash/recycle bin in hadoop?

776

What is the communication channel between client and namenode/datanode?

1771

What are the types of cluster managers in spark?

293

What is the role of Driver program in Spark Application?

290

What do you mean by Free Form Import in Sqoop?

Give me the examples of Columnar database ?

625

How rdd persist the data?

309

Give some points of pig for hadoop ?

588

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