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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-5797) Use more often the new parquet reader
Date Tue, 17 Oct 2017 07:38:00 GMT

    [ https://issues.apache.org/jira/browse/DRILL-5797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16207126#comment-16207126

ASF GitHub Bot commented on DRILL-5797:

Github user dprofeta commented on the issue:

    I updated the javadoc with Paul remarks.

> 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
>              Labels: ready-to-commit
>             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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