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 core benefits for hadoop users by using the apache ambari?

Did you ever ran into a lop sided job that resulted in out of memory error, if yes then how did you handled it ?

405

How to set the number of mappers to be created in MapReduce?

603

Whether Pig Latin language is case-sensitive or not?

609

How is indexing done in HDFS?

Why is transformation lazy operation in Apache Spark RDD? How is it useful?

273

What alternate way does HDFS provides to recover data in case a Namenode, without backup, fails and cannot be recovered?

How can we create rdds in apache spark?

288

What is Safemode in Apache Hadoop?

678

What is meant by rdd lazy evaluation?

387

Which one is the master node in HDFS? Can it be commodity hardware?

Tell me about the execution modes of Apache Pig?

511

Explain Spark Executor

263

Mention how can you stop a partition form being queried?

1075

Which data storage components are used by hadoop?

624

For More Un-Answered { Hadoop } Questions Click Here