[
https://issues.apache.org/jira/browse/HIVE-347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683570#action_12683570
]
Namit Jain commented on HIVE-347:
---------------------------------
There was a problem with the above patch. TRUE and unknown is unknown,
therefore the patch was breaking for the following case:
select .. from T where partCol = value and col = 1;
col = 1 will be null even for 'value' partition, therefore 'value' partition
will also be unknown.
The basic problem is that there is a implicit int to string conversion I dont
think this can/should be fixed.
will upload a new patch undoing the patch
> [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
> Fix For: 0.3.0
>
> Attachments: hive.347.1.patch, hive.347.2.patch, hive.347.3.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.
