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From "Jinfeng Ni (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4800) Improve parquet reader performance
Date Thu, 03 Nov 2016 14:56:58 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15632981#comment-15632981
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Jinfeng Ni commented on DRILL-4800:
-----------------------------------

In the configuration parameter doc https://github.com/parthchandra/drill/wiki/Drill-Parquet-Scan-Configuration,
 the default value of `store.parquet.reader.columnreader.async` would be false, right?
	

> 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
>              Labels: doc-impacting
>
> 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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