Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Hadoop Interview Questions

Questions Answers Views Company eMail

What are the most memory-intensive operations?

What are the main features of impala?

Where can I get sample data to try?

Where can I find impala documentation?

What features from relational databases or hive are not available in impala?

Is hive an impala requirement?

When does impala hold on to or return memory?

What is zookeper?

Mention some instances where zookeeper is using?

How can we create znodes?

How can we create children / sub-znode?

How can we remove a znode?

Explain the zookeeper workflow?

What are the basics of zookeeper api?

What is mandatory while creating a table in cassandra?

Un-Answered Questions { Hadoop }

Explain the processing speed difference between Hadoop and Apache Spark?

290

Clarify what a task tracker is in hadoop?

427

What are different modes of metastore deployment in Hive?

700

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

107

What are the core apis in kafka?

596

Replication causes data redundancy then why is is pursued in HDFS?

What is apache spark written in?

273

What do you understand by schemardd in apache spark rdd?

2279

What is spark code?

315

Give some points of pig for hadoop ?

555

What are the different modes in which we can configure/install Hadoop?

542

Explain cassandra data model?

Why do we need sparkcontext?

297

Are Cassandra, Hadoop, Hbase and Cassandra are the same in nature? Specify.

What is safe mode in Hadoop?

961

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