[CASSANDRA-1311] Triggers

• Type: New Feature
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.0 beta 1
• Assignee: Vijay
• Reporter: Maxim Grinev

Authors

Vijay

Reviewers

Jonathan Ellis

• Created: 23/Jul/10 14:31
• Updated: 20/Jun/20 05:10
• Resolved: 17/May/13 01:23

Description

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.

Issue Links

• is blocked by: CASSANDRA-5034 Refactor to introduce Mutation Container in write path
• is depended upon by: CASSANDRA-4949 Expose reload trigger functionality to nodetool to orchestrate trigger (re)loads across the cluster
• is related to: CASSANDRA-1016 Plugins
• relates to: CASSANDRA-4285 Atomic, eventually-consistent batches