[jira] [Resolved] (HBASE-12884) Asynchronous Event Notification in HBase

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-12884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Kyle Purtell resolved HBASE-12884.
-----------------------------------------
    Resolution: Won't Fix

>  Asynchronous Event Notification in HBase
> -----------------------------------------
>
>                 Key: HBASE-12884
>                 URL: https://issues.apache.org/jira/browse/HBASE-12884
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Shaohui Liu
>            Priority: Major
>
> *Background*
> In many scenarios, we need an asynchronous event notification 
> mechanism on HBase to know which data have been changed and users can do some pre-defined reactions to these events.
> For example: 
> * Incremental statistics of data in HBase
> * Audit about change of important data
> * To clean invalid data in other cache systems
> *Features maybe*
> * The mechanism is scalable.
> * The notification is asynchronous. We don't want to affect the write performance of HBase.
> * The notification is reliable. The events can't be lost, but we can tolerate duplicated events.
> *Solution Maybe*
> * Event notification based on replication. Transform the WAL edits to events, and replicates a special peer that users implements.
> This is just a brief thought about this feature. Discussions and suggestions are welcomed! Thanks.



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