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https://issues.apache.org/jira/browse/DRILL-4800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15390860#comment-15390860
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Tomer Shiran commented on DRILL-4800:
-------------------------------------

This looks interesting and definitely valuable. One other thing that would be 
worth measuring and comparing is the throughput when there are multiple queries 
(perhaps 10 & 50?) running. In a real-world scenario, there will be many BI 
queries running concurrently, so CPU efficiency will be as important as great 
pipelining.

> Improve parquet reader performance
> ----------------------------------
>
>                 Key: DRILL-4800
>                 URL: https://issues.apache.org/jira/browse/DRILL-4800
>             Project: Apache Drill
>          Issue Type: Improvement
>            Reporter: Parth Chandra
>
> Reported by a user in the field - 
> We're generally getting read speeds of about 100-150 MB/s/node on PARQUET 
> scan operator. This seems a little low given the number of drives on the node 
> - 24. We're looking for options we can improve the performance of this 
> operator as most of our queries are I/O bound. 



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