You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@hive.apache.org by "Venky Iyer (JIRA)" <ji...@apache.org> on 2009/01/28 02:04:59 UTC
[jira] Updated: (HIVE-253) rand() gets precomputated in compilation
phase
[ https://issues.apache.org/jira/browse/HIVE-253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Venky Iyer updated HIVE-253:
----------------------------
Priority: Blocker (was: Major)
marking as blocker as per athusoo's recommendation.
> rand() gets precomputated in compilation phase
> ----------------------------------------------
>
> Key: HIVE-253
> URL: https://issues.apache.org/jira/browse/HIVE-253
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Zheng Shao
> Priority: Blocker
>
> SELECT * FROM t WHERE rand() < 0.01;
> Hive will say: "No need to submit job", because the condition evaluates to false.
> The rand() function is special in the sense that every time it evaluates to a different value. We should disallow computing the value in the compiling phase.
> One way to do that is to add an annotation in the UDFRand and check that in the compiling phase.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.