drill-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Steven Phillips (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-3333) Add support for auto-partitioning in parquet writer
Date Mon, 22 Jun 2015 19:07:00 GMT

    [ https://issues.apache.org/jira/browse/DRILL-3333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14596464#comment-14596464
] 

Steven Phillips commented on DRILL-3333:
----------------------------------------

Created reviewboard https://reviews.apache.org/r/35739/


> Add support for auto-partitioning in parquet writer
> ---------------------------------------------------
>
>                 Key: DRILL-3333
>                 URL: https://issues.apache.org/jira/browse/DRILL-3333
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Steven Phillips
>            Assignee: Aman Sinha
>         Attachments: DRILL-3333.patch, DRILL-3333.patch
>
>
> When a table is created with a partition by clause, the parquet writer will create separate
files for the different partition values. The data will first be sorted by the partition keys,
and the parquet writer will create new file when it encounters a new value for the partition
columns.
> When data is queried against the data that was created this way, partition pruning will
work if the filter contains a partition column. And unlike directory based partitioning, no
view is required, nor is it necessary to reference the dir* column names.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message