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From "Jacques Nadeau (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-2425) Wrong results when identifier change cases within the same data file
Date Sun, 15 Mar 2015 20:02:38 GMT

    [ https://issues.apache.org/jira/browse/DRILL-2425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14362533#comment-14362533
] 

Jacques Nadeau commented on DRILL-2425:
---------------------------------------

Which identifier changes case?  This looks like an issue that the data is not be returned
when the schema is changing, no?

> Wrong results when identifier change cases within the same data file
> --------------------------------------------------------------------
>
>                 Key: DRILL-2425
>                 URL: https://issues.apache.org/jira/browse/DRILL-2425
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Data Types
>    Affects Versions: 0.8.0
>            Reporter: Chun Chang
>            Assignee: Daniel Barclay (Drill)
>            Priority: Critical
>
> #Fri Mar 06 16:51:10 EST 2015
> git.commit.id.abbrev=fb293ba
> I have the following JSON file that one of the identifier change cases:
> {code}
> [root@qa-node120 md-83]# hadoop fs -cat /drill/testdata/complex_type/json/schema/a.json
> {"SOURCE": "ebm","msAddressIpv6Array": null}
> {"SOURCE": "ebm","msAddressIpv6Array": {"msAddressIpv6_1":"99.111.222.0", "msAddressIpv6_2":"88.222.333.0"}}
> {"SOURCE": "ebm","msAddressIpv6Array": {"msAddressIpv6_1":"99.111.222.1", "msAddressIpv6_2":"88.222.333.1"}}
> {"SOURCE": "ebm","msAddressIpv6Array": {"msaddressipv6_1":"99.111.222.2", "msAddressIpv6_2":"88.222.333.2"}}
> {code}
> Query this file through drill gives wrong results:
> {code}
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select t.msAddressIpv6Array.msAddressIpv6_1
as msAddressIpv6_1 from `schema/a.json` t;
> +-----------------+
> | msAddressIpv6_1 |
> +-----------------+
> | null            |
> | null            |
> | null            |
> | 99.111.222.2    |
> +-----------------+
> {code}
> plan:
> {code}
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> explain plan for select t.msAddressIpv6Array.msAddressIpv6_1
as msAddressIpv6_1 from `schema/a.json` t;
> +------------+------------+
> |    text    |    json    |
> +------------+------------+
> | 00-00    Screen
> 00-01      Project(msAddressIpv6_1=[ITEM($0, 'msAddressIpv6_1')])
> 00-02        Scan(groupscan=[EasyGroupScan [selectionRoot=/drill/testdata/complex_type/json/schema/a.json,
numFiles=1, columns=[`msAddressIpv6Array`.`msAddressIpv6_1`], files=[maprfs:/drill/testdata/complex_type/json/schema/a.json]]])
> {code}



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