drill-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vitalii Diravka (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-5034) Select timestamp from hive generated parquet always return in UTC
Date Tue, 07 Feb 2017 10:35:41 GMT

     [ https://issues.apache.org/jira/browse/DRILL-5034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vitalii Diravka updated DRILL-5034:
-----------------------------------
    Labels:   (was: ready-to-commit)

> Select timestamp from hive generated parquet always return in UTC
> -----------------------------------------------------------------
>
>                 Key: DRILL-5034
>                 URL: https://issues.apache.org/jira/browse/DRILL-5034
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Parquet
>    Affects Versions: 1.9.0
>            Reporter: Krystal
>            Assignee: Vitalii Diravka
>
> commit id: 5cea9afa6278e21574c6a982ae5c3d82085ef904
> Reading timestamp data against a hive parquet table from drill automatically converts
the timestamp data to UTC. 
> {code}
> SELECT TIMEOFDAY() FROM (VALUES(1));
> +----------------------------------------------+
> |                    EXPR$0                    |
> +----------------------------------------------+
> | 2016-11-10 12:33:26.547 America/Los_Angeles  |
> +----------------------------------------------+
> {code}
> data schema:
> {code}
> message hive_schema {
>   optional int32 voter_id;
>   optional binary name (UTF8);
>   optional int32 age;
>   optional binary registration (UTF8);
>   optional fixed_len_byte_array(3) contributions (DECIMAL(6,2));
>   optional int32 voterzone;
>   optional int96 create_timestamp;
>   optional int32 create_date (DATE);
> }
> {code}
> Using drill-1.8, the returned timestamps match the table data:
> {code}
> select convert_from(create_timestamp, 'TIMESTAMP_IMPALA') from `/user/hive/warehouse/voter_hive_parquet`
limit 5;
> +------------------------+
> |         EXPR$0         |
> +------------------------+
> | 2016-10-23 20:03:58.0  |
> | null                   |
> | 2016-09-09 12:01:18.0  |
> | 2017-03-06 20:35:55.0  |
> | 2017-01-20 22:32:43.0  |
> +------------------------+
> 5 rows selected (1.032 seconds)
> {code}
> If the user timzone is changed to UTC, then the timestamp data is returned in UTC time.
> Using drill-1.9, the returned timestamps got converted to UTC eventhough the user timezone
is in PST.
> {code}
> select convert_from(create_timestamp, 'TIMESTAMP_IMPALA') from dfs.`/user/hive/warehouse/voter_hive_parquet`
limit 5;
> +------------------------+
> |         EXPR$0         |
> +------------------------+
> | 2016-10-24 03:03:58.0  |
> | null                   |
> | 2016-09-09 19:01:18.0  |
> | 2017-03-07 04:35:55.0  |
> | 2017-01-21 06:32:43.0  |
> +------------------------+
> {code}
> {code}
> alter session set `store.parquet.reader.int96_as_timestamp`=true;
> +-------+---------------------------------------------------+
> |  ok   |                      summary                      |
> +-------+---------------------------------------------------+
> | true  | store.parquet.reader.int96_as_timestamp updated.  |
> +-------+---------------------------------------------------+
> select create_timestamp from dfs.`/user/hive/warehouse/voter_hive_parquet` limit 5;
> +------------------------+
> |    create_timestamp    |
> +------------------------+
> | 2016-10-24 03:03:58.0  |
> | null                   |
> | 2016-09-09 19:01:18.0  |
> | 2017-03-07 04:35:55.0  |
> | 2017-01-21 06:32:43.0  |
> +------------------------+
> {code}
>  



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message