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From "Parth Chandra (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4800) Improve parquet reader performance
Date Wed, 12 Oct 2016 23:15:20 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15570177#comment-15570177
] 

Parth Chandra commented on DRILL-4800:
--------------------------------------

Submitted PR 611: https://github.com/apache/drill/pull/611
[~jaltekruse] Would you like to take a look?
Also added some documentation here on the configurable options here: https://github.com/parthchandra/drill/wiki/Parquet-file-reading-performance-improvement

I'll post some performance number in the next couple of days.


> 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
>            Assignee: 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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