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From "Andrew Musselman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-3972) Vectorize Parquet Writer
Date Fri, 23 Oct 2015 18:59:27 GMT

    [ https://issues.apache.org/jira/browse/DRILL-3972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14971627#comment-14971627
] 

Andrew Musselman commented on DRILL-3972:
-----------------------------------------

I'd like to take a look at it; let me know where to start.

> Vectorize Parquet Writer
> ------------------------
>
>                 Key: DRILL-3972
>                 URL: https://issues.apache.org/jira/browse/DRILL-3972
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Parquet
>            Reporter: Julien Le Dem
>              Labels: pick-me-up
>
> Currently the [ParquetRecordWriter|https://github.com/apache/drill/blob/a98da39dd5a8fa368afd8765f4e981826bbfcc0f/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetRecordWriter.java]
receives one record at a time and then turns that into columns.
> Which means we convert from Drill columns to rows and then to Parquet columns.
> Instead we could directly convert the Drill columns into Parquet columns in a vectorized
manner.



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