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https://issues.apache.org/jira/browse/DRILL-5797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16194772#comment-16194772
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ASF GitHub Bot commented on DRILL-5797:
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Github user sachouche commented on the issue:
https://github.com/apache/drill/pull/976
Sure!
Regards,
Salim
________________________________
From: dprofeta <[email protected]>
Sent: Friday, October 6, 2017 8:52:51 AM
To: apache/drill
Cc: Salim Achouche; Mention
Subject: Re: [apache/drill] DRILL-5797: Choose parquet reader from read
columns (#976)
@sachouche<https://github.com/sachouche> Can you review it?
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> Use more often the new parquet reader
> -------------------------------------
>
> Key: DRILL-5797
> URL: https://issues.apache.org/jira/browse/DRILL-5797
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - Parquet
> Reporter: Damien Profeta
> Assignee: Damien Profeta
> Fix For: 1.12.0
>
>
> The choice of using the regular parquet reader of the optimized one is based
> of what type of columns is in the file. But the columns that are read by the
> query doesn't matter. We can increase a little bit the cases where the
> optimized reader is used by checking is the projected column are simple or
> not.
> This is an optimization waiting for the fast parquet reader to handle complex
> structure.
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