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 importance of driver in hive?

714

How can hive avoid mapreduce?

696

What are hive operators and its types?

751

when to choose “internal table” and “external table” in hive?

678

How do you specify the table creator name when creating a table in hive?

692

what is partitions in hive?

684

What do you mean by schema on read?

715

what does the shell commands “Capture” and “Consistency” determines?

111

how Cassandra delete Data?

114

what is Memtable in Cassandra?

109

what needs to be taken care while adding a Column?

107

how Cassandra writes data?

117

how Cassandra writes changed data into commitlog?

what is Cassandra- CQL collections?

105

what is Bloom Filter is used for in Cassandra?

115

Un-Answered Questions { Hadoop }

What is a primary key? And what are it’s different types?

What is the relationship between Jobs and Tasks in Hadoop?

617

What is the future of apache spark?

279

Where are hadoop’s configuration files located and list them?

447

Explain Erasure Coding in Hadoop?

503

What can be optimum value for Reducer?

947

What are the types of cluster managers in spark?

282

Give me an example of document database ?

476

How multi-hop agent can be setup in Flume?

110

What is use of tools command?

194

How to Delete directory and files recursively from HDFS?

What do you mean by replication factor?

State some Ambari components which we can use for automation as well as integration?

110

Give key features of any NoSQL database?

104

How does hbase actually delete a row?

192

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