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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-788) Triggers when a new partition is created for a table
Date Wed, 15 Dec 2010 01:52:09 GMT

    [ https://issues.apache.org/jira/browse/HIVE-788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12971522#action_12971522
] 

Ashutosh Chauhan commented on HIVE-788:
---------------------------------------

Seems like no one is working on it. Then question then is  is it considered to be useful feature
for Hive and would people like to use it if its there?

> Triggers when a new partition is created for a table
> ----------------------------------------------------
>
>                 Key: HIVE-788
>                 URL: https://issues.apache.org/jira/browse/HIVE-788
>             Project: 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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