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https://issues.apache.org/jira/browse/DRILL-5088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15768134#comment-15768134
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ASF GitHub Bot commented on DRILL-5088:
---------------------------------------
GitHub user chunhui-shi opened a pull request:
https://github.com/apache/drill/pull/702
DRILL-5088: set default codec for toJson
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/chunhui-shi/drill DRILL-5088
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/702.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #702
----
commit c285a334eaeda810150ff162d1e1c0da342a37ff
Author: chunhui-shi <c...@maprtech.com>
Date: 2016-12-18T08:27:50Z
DRILL-5088: set default codec for toJson
----
> Error when reading DBRef column
> -------------------------------
>
> Key: DRILL-5088
> URL: https://issues.apache.org/jira/browse/DRILL-5088
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Data Types
> Environment: drill 1.9.0
> mongo 3.2
> Reporter: Guillaume Champion
> Assignee: Chunhui Shi
>
> In a mongo database with DBRef, when a DBRef is inserted in the first line of
> a mongo's collection drill query failed :
> {code}
> 0: jdbc:drill:zk=local> select * from mongo.mydb.contact2;
> Error: SYSTEM ERROR: CodecConfigurationException: Can't find a codec for
> class com.mongodb.DBRef.
> {code}
> Simple example to reproduce:
> In mongo instance
> {code}
> db.contact2.drop();
> db.contact2.insert({ "_id" : ObjectId("582081d96b69060001fd8938"), "account"
> : DBRef("contact", ObjectId("999cbf116b69060001fd8611")) });
> {code}
> In drill :
> {code}
> 0: jdbc:drill:zk=local> select * from mongo.mydb.contact2;
> Error: SYSTEM ERROR: CodecConfigurationException: Can't find a codec for
> class com.mongodb.DBRef.
> [Error Id: 2944d766-e483-4453-a706-3d481397b186 on Analytics-Biznet:31010]
> (state=,code=0)
> {code}
> If the first line doesn't contain de DBRef, drill will querying correctly :
> In a mongo instance :
> {code}
> db.contact2.drop();
> db.contact2.insert({ "_id" : ObjectId("582081d96b69060001fd8939") });
> db.contact2.insert({ "_id" : ObjectId("582081d96b69060001fd8938"), "account"
> : DBRef("contact", ObjectId("999cbf116b69060001fd8611")) });
> {code}
> In drill :
> {code}
> 0: jdbc:drill:zk=local> select * from mongo.mydb.contact2;
> +--------------------------------------+---------------------------------------------------------------+
> | _id | account
> |
> +--------------------------------------+---------------------------------------------------------------+
> | {"$oid":"582081d96b69060001fd8939"} | {"$id":{}}
> |
> | {"$oid":"582081d96b69060001fd8938"} |
> {"$ref":"contact","$id":{"$oid":"999cbf116b69060001fd8611"}} |
> +--------------------------------------+---------------------------------------------------------------+
> 2 rows selected (0,563 seconds)
> {code}
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