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?

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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 }

Is hive an impala requirement?

What are the names of daemons in impala?

How apache impala works with cdh?

Why does my select statement fail?

Is there an update statement?

162

Why does my insert statement fail?

Where can I find impala documentation?

What is troubleshooting for impala?

How much memory is required?

Can I do insert … select * into a partitioned table?

How does impala achieve its performance improvements?

State use cases of impala?

How does impala process join queries for large tables?

Is avro supported?

How can it help for avoiding costly modeling?

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