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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4764) Parquet file with INT_16, etc. logical types not supported by simple SELECT
Date Wed, 30 Nov 2016 16:06:58 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15708969#comment-15708969
] 

ASF GitHub Bot commented on DRILL-4764:
---------------------------------------

GitHub user Serhii-Harnyk opened a pull request:

    https://github.com/apache/drill/pull/673

    DRILL-4764: Parquet file with INT_16, etc. logical types not supporte…

    …d by simple SELECT

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/Serhii-Harnyk/drill DRILL-4764

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/drill/pull/673.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #673
    
----
commit ef8d7a294e1549eb5fbb61da3aad069a478ffca6
Author: Serhii-Harnyk <serhii.harnyk@gmail.com>
Date:   2016-11-24T13:24:03Z

    DRILL-4764: Parquet file with INT_16, etc. logical types not supported by simple SELECT

----


> Parquet file with INT_16, etc. logical types not supported by simple SELECT
> ---------------------------------------------------------------------------
>
>                 Key: DRILL-4764
>                 URL: https://issues.apache.org/jira/browse/DRILL-4764
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Data Types
>    Affects Versions: 1.6.0
>            Reporter: Paul Rogers
>            Assignee: Serhii Harnyk
>         Attachments: int_16.parquet, int_8.parquet, uint_16.parquet, uint_32.parquet,
uint_8.parquet
>
>
> Create a Parquet file with the following schema:
> message int16Data { required int32 index; required int32 value (INT_16); }
> Store it as int_16.parquet in the local file system. Query it with:
> SELECT * from `local`.`root`.`int_16.parquet`;
> The result, in the web UI, is this error:
> org.apache.drill.common.exceptions.UserRemoteException: SYSTEM ERROR: UnsupportedOperationException:
unsupported type: INT32 INT_16 Fragment 0:0 [Error Id: c63f66b4-e5a9-4a35-9ceb-546b74645dd4
on 172.30.1.28:31010]
> The INT_16 logical (or "original") type simply tells consumers of the file that the data
is actually a 16-bit signed int. Presumably, this should tell Drill to use the SmallIntVector
(or NullableSmallIntVector) class for storage. Without supporting this annotation, even 16-bit
integers must be stored as 32-bits within Drill.



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