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From "Chun Chang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-1416) conver_from() on JSON fails - regression
Date Thu, 04 Dec 2014 01:30:12 GMT

    [ https://issues.apache.org/jira/browse/DRILL-1416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14233773#comment-14233773
] 

Chun Chang commented on DRILL-1416:
-----------------------------------

verified fix:
#Wed Dec 03 15:18:01 EST 2014
git.commit.id.abbrev=58994af

0: jdbc:drill:schema=dfs.drillTestDirMondrian> select convert_from(convert_to(rl[1], 'JSON'),
'JSON') from `input2.json`;
+------------+
|   EXPR$0   |
+------------+
| [4,6]      |
| []         |
| [4,6]      |
| [4,6]      |
+------------+

> conver_from() on JSON fails - regression
> ----------------------------------------
>
>                 Key: DRILL-1416
>                 URL: https://issues.apache.org/jira/browse/DRILL-1416
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Functions - Drill
>    Affects Versions: 0.6.0
>            Reporter: Chun Chang
>            Assignee: Jason Altekruse
>             Fix For: 0.6.0
>
>
> The following query worked before, but fails with the latest master (#Fri Sep 12 14:08:02
PDT 2014
> git.commit.id.abbrev=9e16466)
> 0: jdbc:drill:schema=dfs> select convert_from(convert_to(rl[1], 'JSON'), 'JSON') from
`input2.json`;
> Query failed: Failure while running fragment. Failure while parsing JSON.  Found token
of [VALUE_NULL]  Drill currently only supports parsing json strings that contain either lists
or maps.  The root object cannot be a scalar.
>  at [Source: java.io.StringReader@3d552116; line: 1, column: 9] [8752d761-4ed4-4314-b621-e9f061849a11]
> Error: exception while executing query: Failure while trying to get next result batch.
(state=,code=0)
> The input2.json file looks like this:
> [root@qa-node120 ~]# hadoop fs -cat /user/root/mondrian/input2.json
> { "integer" : 2010,
>   "float"   : 17.4,
>   "x": {
>     "y": "kevin",
>     "z": "paul"
>   },
>   "z": [
>     {"orange" : "yellow" , "pink": "red"},
>     {"pink" : "purple" }
>   ],
>   "l": [4,2],
>   "rl": [ [2,1], [4,6] ]
> }
> { "integer" : -2002,
>   "float"   : -1.2
> }
> { "integer" : 2001,
>   "float"   : 1.2,
>   "x": {
>     "y": "bill",
>     "z": "peter"
>   },
>   "z": [
>     {"pink" : "lilac" }
>   ],
>   "l": [4,2],
>   "rl": [ [2,1], [4,6] ]
> }
> { "integer" : 6005,
>   "float"   : 1.2,
>   "x": {
>     "y": "mike",
>     "z": "mary"
>   },
>   "z": [
>     {"orange" : "stucco" }
>   ],
>   "l": [4,2],
>   "rl": [ [2,1], [4,6] ]
> }
> The convert_to appears working:
> 0: jdbc:drill:schema=dfs> select convert_to(rl[1], 'JSON')  from `input2.json`;
> +------------+
> |   EXPR$0   |
> +------------+
> | [B@3a8a8b88 |
> | [B@5dceabbe |
> | [B@2b6d770f |
> | [B@1fa3900f |
> +------------+
> 4 rows selected (0.116 seconds)



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