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From "Jacques Nadeau (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-1629) Cast issue during query
Date Tue, 05 May 2015 13:37:08 GMT

     [ https://issues.apache.org/jira/browse/DRILL-1629?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jacques Nadeau updated DRILL-1629:
----------------------------------
    Fix Version/s:     (was: 1.0.0)
                   1.2.0

> Cast issue during query
> -----------------------
>
>                 Key: DRILL-1629
>                 URL: https://issues.apache.org/jira/browse/DRILL-1629
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>            Reporter: Tomer Shiran
>            Assignee: Aman Sinha
>            Priority: Minor
>             Fix For: 1.2.0
>
>
> Imported Yelp user.json file into a local MongoDB instance (via mongoimport). Ran the
following query to find the names of the users who had the most reviews:
> {code}
> 0: jdbc:drill:zk=local> SELECT u.user_id, u.name, count(*) reviews FROM mongo.yelp.users
u, dfs.yelp.`yelp_academic_dataset_review.json` r WHERE u.user_id = r.user_id GROUP BY u.user_id,
u.name ORDER BY reviews DESC LIMIT 10;
> Query failed: Failure while running fragment. Failure finding function that runtime code
generation expected.  Signature: compare_to( VARCHAR:OPTIONALINT:OPTIONAL,  ) returns INT:REQUIRED
[c796f1fb-b73a-49e8-8b4a-ed973d89b7d3]
> Error: exception while executing query: Failure while trying to get next result batch.
(state=,code=0)
> {code}
> Here's the explain plan:
> {code}
> 0: jdbc:drill:zk=local> EXPLAIN PLAN FOR SELECT u.user_id, u.name, count(*) reviews
FROM mongo.yelp.users u, dfs.yelp.`yelp_academic_dataset_review.json` r WHERE u.user_id =
r.user_id GROUP BY u.user_id, u.name ORDER BY reviews DESC LIMIT 10;
> +------------+------------+
> |    text    |    json    |
> +------------+------------+
> | 00-00    Screen
> 00-01      Project(user_id=[$0], name=[$1], reviews=[$2])
> 00-02        SelectionVectorRemover
> 00-03          Limit(fetch=[10])
> 00-04            SingleMergeExchange(sort0=[2 DESC])
> 01-01              SelectionVectorRemover
> 01-02                TopN(limit=[10])
> 01-03                  HashToRandomExchange(dist0=[[$2]])
> 02-01                    HashAgg(group=[{0, 1}], reviews=[COUNT()])
> 02-02                      Project(user_id=[$0], name=[$1])
> 02-03                        HashJoin(condition=[=($0, $2)], joinType=[inner])
> 02-05                          HashToRandomExchange(dist0=[[$0]])
> 03-01                            Scan(groupscan=[MongoGroupScan [MongoScanSpec=MongoScanSpec
[dbName=yelp, collectionName=users, filters=null], columns=[SchemaPath [`user_id`], SchemaPath
[`name`]]]])
> 02-04                          HashToRandomExchange(dist0=[[$0]])
> 04-01                            Project(T8¦¦*=[$0])
> 04-02                              Project(T8¦¦*=[$0], T8¦¦user_id=[$ |
> +------------+------------+
> 1 row selected (0.42 seconds)
> {code}



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