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Posted to issues@drill.apache.org by "Rahul Challapalli (JIRA)" <ji...@apache.org> on 2015/05/07 23:35:02 UTC
[jira] [Closed] (DRILL-1249) JSON select with "LIMIT 1" throws
exception when NULL exists in array
[ https://issues.apache.org/jira/browse/DRILL-1249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rahul Challapalli closed DRILL-1249.
------------------------------------
Verified and added the below testcase
Functional/Passing/json_storage/q_DRILL-1249.q
> JSON select with "LIMIT 1" throws exception when NULL exists in array
> ---------------------------------------------------------------------
>
> Key: DRILL-1249
> URL: https://issues.apache.org/jira/browse/DRILL-1249
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - JSON
> Affects Versions: 0.4.0
> Environment: 5-node Hadoop cluster (MapR 3.1.1)
> Reporter: Andy Pernsteiner
> Assignee: DrillCommitter
> Priority: Critical
> Fix For: 0.5.0
>
> Attachments: DRILL-1249.1.patch.txt
>
>
> This may be related to DRILL-1239
> With a JSON file that has the following contents:
> {code}
> {"trans_id":0,"date":"10/24/2012","time":"06:14:07","cust_id":3,"device":"IOS5","state":"nj","camp_id":4,"keywords":["the"],"prod_id":[],"purch_flag":"true"}
> {"trans_id":1,"date":"06/07/2013","time":"12:29:37","cust_id":111464,"device":"IOS5","state":"va","camp_id":4,"keywords":[],"prod_id":[78,116,18,508,28,309,149,80,360,6,28,52,235],"purch_flag":"false"}
> {"trans_id":2,"date":"05/16/2013","time":"04:55:41","cust_id":2817,"device":"IOS5","state":"sc","camp_id":10,"keywords":[],"prod_id":[179,247],"purch_flag":"false"}
> {"trans_id":3,"date":"06/03/2013","time":"08:14:23","cust_id":14085,"device":"IOS6","state":"oh","camp_id":6,"keywords":["steal"],"prod_id":[510,142,18],"purch_flag":"false"}
> {"trans_id":4,"date":"04/10/2013","time":"06:32:31","cust_id":1044,"device":"IOS6","state":"il","camp_id":16,"keywords":[],"prod_id":[25,28,316],"purch_flag":"false"}
> {"trans_id":5,"date":"07/27/2013","time":"10:02:24","cust_id":13,"device":"IOS5","state":"oh","camp_id":4,"keywords":["town","you"],"prod_id":[4,1,79,449],"purch_flag":"false"}
> {code}
> Performing a select w/ a LIMIT throws an error if the LIMIT lines up with a null value (I think):
> {code}
> 0: jdbc:drill:> select * from click.`json_small`.`small.json` limit 1;
> Error: exception while executing query: null (state=,code=0)
> {code}
> If I re-run the query with a larger limit I don't hit the error:
> {code}
> 0: jdbc:drill:> select * from click.`json_small`.`small.json` limit 2;
> +------------+------------+------------+------------+------------+------------+------------+------------+------------+------------+
> | trans_id | date | time | cust_id | device | state | camp_id | keywords | purch_flag | prod_id |
> +------------+------------+------------+------------+------------+------------+------------+------------+------------+------------+
> | 0 | 10/24/2012 | 06:14:07 | 3 | IOS5 | nj | 4 | ["the"] | true | [] |
> | 1 | 06/07/2013 | 12:29:37 | 111464 | IOS5 | va | 4 | [] | false | [78,116,18,508,28,309,149,80,360,6,28,52,235] |
> +------------+------------+------------+------------+------------+------------+------------+------------+------------+------------+
> 2 rows selected (0.223 seconds)
> {code}
> Note that the first record contains a null value for the prod_id array.
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