[DRILL-2201] clear error message on join on complex type

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 1.0.0
• Component/s: Execution - Data Types
• Assignee: Chun Chang
• Reporter: Chun Chang
• Created: 10/Feb/15 19:25
• Updated: 02/Apr/15 20:37
• Resolved: 02/Apr/15 20:37

Description

#Mon Feb 09 15:58:57 EST 2015
git.commit.id.abbrev=3d863b5

Dataset can be downloaded from
https://s3.amazonaws.com/apache-drill/files/complex.json.gz

We do not support join condition on complex type. But the error message is not clear to end user.

0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select a.id from `complex.json` a left outer join `complex.json` b on a.oooa=b.oooa;
Query failed: RemoteRpcException: Failure while running fragment., Failure while trying to materialize incoming schema.  Errors:

Error in expression at index 0.  Error: Missing function implementation: [hash(MAP-REQUIRED)].  Full expression: null.. [ 6a61d61f-670f-4ddc-bb1d-09a47f49f38e on qa-node120.qa.lab:31010 ]
[ 6a61d61f-670f-4ddc-bb1d-09a47f49f38e on qa-node120.qa.lab:31010 ]


Error: exception while executing query: Failure while executing query. (state=,code=0)

Here oooa is a complex type:

{
    "oooa": {
        "oa": {
            "oab": {
                "oabc": [
                    {
                        "rowId": 1
                    },
                    {
                        "rowValue1": 1,
                        "rowValue2": 1
                    }
                ]
            }
        }
    }
}