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

Apache Impala Interview Questions

Questions Answers Views Company eMail

How does impala compare to hive and pig?

How does impala achieve its performance improvements?

Can I use impala to query data already loaded into hive and hbase?

What happens when the data set exceeds available memory?

How much memory is required?

Are results returned as they become available, or all at once when a query completes?

Why do I have to use refresh and invalidate metadata, what do they do?

Why does my select statement fail?

Does impala performance improve as it is deployed to more hosts in a cluster in much the same way that hadoop performance does?

Can I do transforms or add new functionality?

Why is space not freed up when I issue drop table?

Is avro supported?

Un-Answered Questions { Apache Impala }

Why is space not freed up when I issue drop table?

Describe impala shell (impala-shell command)?

How to call impala built-in functions?

Can impala do user-defined functions (udfs)?

Why we need impala hadoop?

Does cloudera offer a vm for demonstrating impala?

Does if offer scaling?

Can I do transforms or add new functionality?

What impala use for authentication?

What happens if there is an error in impala?

109

State some advantages of impala?

How is impala metadata managed?

Can I do trforms or add new functionality?

What happens when the data set exceeds available memory?

Does impala support generic jdbc?

For More Un-Answered { Apache Impala } Questions Click Here