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

Big Data Interview Questions

Questions Answers Views Company eMail

What kinds of impala queries or data are best suited for hbase?

Is impala intended to handle real time queries in low-latency applications or is it for ad hoc queries for the purpose of data exploration?

Can I do trforms or add new functionality?

Why does my insert statement fail?

Is impala production ready?

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?

Un-Answered Questions { Big Data }

what is a cluster in cassandra?

Explain what is shuffling in mapreduce?

627

Can you explain spark rdd?

292

explain Metadata in Namenode?

918

What are shared variables?

332

What is a TaskInstance?

669

What is Mapper? How can we compress Mapper output in Hadoop?

519

Compare Hadoop and Spark?

322

Explain the process to trigger automatic clean-up in Spark to manage accumulated metadata.

308

Input Split & Record Reader and what they do?

1031

Where can I get sample data to try?

How to access HDFS?

What is the relationship between hdfs, hbase, pig, hive and azkaban?

510

Explain HCatInputFormat and HCatOutputFormat?

What is the utilization of hcatalog?

686

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