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From "Edward Capriolo (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-788) Triggers when a new partition is created for a table
Date Tue, 25 Aug 2009 00:20:59 GMT

    [ https://issues.apache.org/jira/browse/HIVE-788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747158#action_12747158
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Edward Capriolo commented on HIVE-788:
--------------------------------------

It would also be nice to triffer when a new file is added to the table. I do alot of "load
data infile" to already existing partitions.

> Triggers when a new partition is created for a table
> ----------------------------------------------------
>
>                 Key: HIVE-788
>                 URL: https://issues.apache.org/jira/browse/HIVE-788
>             Project: Hadoop Hive
>          Issue Type: New Feature
>            Reporter: Zheng Shao
>
> One requirement for HIVE-787 is that users would like to run a command whenever a new
partition of a Hive table gets created.
> There are several ways to achieve this functionality:
> A. Probe and wait: We can have the scripts running in a loop checking if a new partition
is created.
>   Pros: easy to write, easy to control
>   Cons: will introduce another delay based on the probing interval.
> B. Triggered: The command is registered inside the hive metastore. Whenever a partition
gets created, we run the registered command. 
> Several questions around option B are:
> 1. whether to support registration of HiveQL or shell command;
> 2. which machine/environment to run the command;
> 3. what to do if the registered command failed.

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