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 does /*streamtable(table_name)*/ do?

716

what is (HS2) HiveServer2?

644

Explain how cassandra delete data?

Mention what needs to be taken care while adding a column?

Mention when you can use alter keyspace?

Define memtable?

Explain how cassandra writes data?

Explain what is memtable in cassandra?

Explain cap theorem?

100

What are the Difference between MongoDB and Cassandra?

What is the function of Cluster.Builder class in Cassandra?

138

What is SSTable? How is it different from other relational tables?

116

How does Cassandra write?

Explain the concept of bloom filter?

Explain the concept of Tunable Consistency in Cassandra?

200

Un-Answered Questions { Hadoop }

Is kafka part of hadoop?

470

Is spark good for machine learning?

288

What is the difference between logical and physical plans?

520

Explain the format of an apache kafka message?

458

What is throughput? How does HDFS get a good throughput?

Clarify what is sequence file input format?

490

what are the steps involved in decommissioning removing

973

Explain the need for MapReduce while programming in Apache Pig?

747

What are the drawbacks of Pig?

553

Is apache spark a tool?

253

Which are the methods to create rdd in spark?

278

What is the difference between Apache Hadoop and RDBMS?

742

What is the role of alter keyspace?

What happens when you issue a delete command in hbase?

162

State benefits of Hadoop users by using Apache Ambari?

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