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From "Khurram Faraaz (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (DRILL-3333) Add support for auto-partitioning in parquet writer
Date Fri, 18 Sep 2015 01:45:04 GMT

     [ https://issues.apache.org/jira/browse/DRILL-3333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Khurram Faraaz closed DRILL-3333.


> 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: Steven Phillips
>             Fix For: 1.1.0
>         Attachments: DRILL-3333.patch, DRILL-3333.patch, DRILL-3333_2015-06-22_15:22:11.patch,
DRILL-3333_2015-06-23_17:38:32.patch, DRILL-3333_tests.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
> 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.

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