[jira] Commented: (HIVE-347) [hive] lot of mappers due to a user error while specifying the partitioning column

["Prasad Chakka (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681978#action_12681978 ] 

Prasad Chakka commented on HIVE-347:
------------------------------------

The changes look good. I think the Error Message will confuse users since they see a partition predicate. I think error message should say something about incorrect type or quotes.

> [hive] lot of mappers due to a user error while specifying the partitioning column
> ----------------------------------------------------------------------------------
>
>                 Key: HIVE-347
>                 URL: https://issues.apache.org/jira/browse/HIVE-347
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: hive.347.1.patch
>
>
> A common scenario when the table is partitioned on 'ds' column which is of type 'string' of a certain format 'yyyy-mm-dd'
> However, if the user forgets to add quotes while specifying the query:
> select ... from T where ds = 2009-02-02
> 2009-02-02 is a valid integer expression. So, partition pruning makes all partitions unknown, since 2009-02-02 to double conversion is null.
> If all partitions are unknown, in strict mode, we should thrown an error

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.