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From "Jacques Nadeau (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-1750) Querying directories with JSON files returns incomplete results
Date Tue, 05 May 2015 14:30:03 GMT

     [ https://issues.apache.org/jira/browse/DRILL-1750?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jacques Nadeau updated DRILL-1750:
----------------------------------
    Fix Version/s:     (was: 1.0.0)
                   1.2.0

> Querying directories with JSON files returns incomplete results
> ---------------------------------------------------------------
>
>                 Key: DRILL-1750
>                 URL: https://issues.apache.org/jira/browse/DRILL-1750
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - JSON
>            Reporter: Abhishek Girish
>            Assignee: Steven Phillips
>            Priority: Critical
>             Fix For: 1.2.0
>
>         Attachments: 1.json, 2.json, 3.json, 4.json
>
>
> I happened to observe that querying (select *) a directory with json files displays only
fields common to all json files. All corresponding fields are displayed while querying each
of the json files individually. And in some scenarios, querying the directory crashes sqlline.
> The example below may help make the issue clear:
> > select * from dfs.`/data/json/tmp/1.json`;
> +------------+------------+------------+
> |   artist   |  track_id  |   title    |
> +------------+------------+------------+
> | Jonathan King | TRAAAEA128F935A30D | I'll Slap Your Face (Entertainment USA Theme)
|
> +------------+------------+------------+
> 1 row selected (1.305 seconds)
> > select * from dfs.`/data/json/tmp/2.json`;
> +------------+------------+------------+------------+
> |   artist   | timestamp  |  track_id  |   title    |
> +------------+------------+------------+------------+
> | Supersuckers | 2011-08-01 20:30:17.991134 | TRAAAQN128F9353BA0 | Double Wide |
> +------------+------------+------------+------------+
> 1 row selected (0.105 seconds)
> > select * from dfs.`/data/json/tmp/3.json`;
> +------------+------------+------------+
> | timestamp  |  track_id  |   title    |
> +------------+------------+------------+
> | 2011-08-01 20:30:17.991134 | TRAAAQN128F9353BA0 | Double Wide |
> +------------+------------+------------+
> 1 row selected (0.083 seconds)
> > select * from dfs.`/data/json/tmp/4.json`;
> +------------+------------+
> |  track_id  |   title    |
> +------------+------------+
> | TRAAAQN128F9353BA0 | Double Wide |
> +------------+------------+
> 1 row selected (0.076 seconds)
> > select * from dfs.`/data/json/tmp`;
> +------------+------------+
> |  track_id  |   title    |
> +------------+------------+
> | TRAAAQN128F9353BA0 | Double Wide |
> | TRAAAQN128F9353BA0 | Double Wide |
> | TRAAAEA128F935A30D | I'll Slap Your Face (Entertainment USA Theme) |
> | TRAAAQN128F9353BA0 | Double Wide |
> +------------+------------+
> 4 rows selected (0.121 seconds)
> JVM Crash occurs at times:
> > select * from dfs.`/data/json/tmp`;
> +------------+------------+------------+
> | timestamp  |  track_id  |   title    |
> +------------+------------+------------+
> | 2011-08-01 20:30:17.991134 | TRAAAQN128F9353BA0 | Double Wide |
> #
> # A fatal error has been detected by the Java Runtime Environment:
> #
> #  SIGSEGV (0xb) at pc=0x00007f3cb99be053, pid=13943, tid=139898808436480
> #
> # JRE version: OpenJDK Runtime Environment (7.0_65-b17) (build 1.7.0_65-mockbuild_2014_07_16_06_06-b00)
> # Java VM: OpenJDK 64-Bit Server VM (24.65-b04 mixed mode linux-amd64 compressed oops)
> # Problematic frame:
> # V  [libjvm.so+0x932053]
> #
> # Failed to write core dump. Core dumps have been disabled. To enable core dumping, try
"ulimit -c unlimited" before starting Java again
> #
> # An error report file with more information is saved as:
> # /tmp/jvm-13943/hs_error.log
> #
> # If you would like to submit a bug report, please include
> # instructions on how to reproduce the bug and visit:
> #   http://icedtea.classpath.org/bugzilla
> #
> Aborted



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