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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-1311) Triggers
Date Mon, 12 Nov 2012 16:07:19 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13495364#comment-13495364
] 

Jonathan Ellis commented on CASSANDRA-1311:
-------------------------------------------

The same as any other atomic batch when you've disabled commitlog for any of the CFs involved.
 (Atomic batch guarantees that the writes are sent to the replicas, but if you've disabled
commitlog then it cannot guarantee that it is durable.)
                
> Triggers
> --------
>
>                 Key: CASSANDRA-1311
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1311
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Maxim Grinev
>            Assignee: Vijay
>             Fix For: 1.3
>
>         Attachments: HOWTO-PatchAndRunTriggerExample.txt, HOWTO-PatchAndRunTriggerExample-update1.txt,
ImplementationDetails.pdf, ImplementationDetails-update1.pdf, trunk-967053.txt, trunk-984391-update1.txt,
trunk-984391-update2.txt
>
>
> Asynchronous triggers is a basic mechanism to implement various use cases of asynchronous
execution of application code at database side. For example to support indexes and materialized
views, online analytics, push-based data propagation.
> Please find the motivation, triggers description and list of applications:
> http://maxgrinev.com/2010/07/23/extending-cassandra-with-asynchronous-triggers/
> An example of using triggers for indexing:
> http://maxgrinev.com/2010/07/23/managing-indexes-in-cassandra-using-async-triggers/
> Implementation details are attached.

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