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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-788) Triggers when a new partition is created for a table
Date Mon, 24 Aug 2009 22:42:59 GMT
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
  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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