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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2013/10/30 21:05:25 UTC

[jira] [Created] (HBASE-9864) Notifications bus for use by cluster members keeping up-to-date on changes

stack created HBASE-9864:
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             Summary: Notifications bus for use by cluster members keeping up-to-date on changes
                 Key: HBASE-9864
                 URL: https://issues.apache.org/jira/browse/HBASE-9864
             Project: HBase
          Issue Type: Brainstorming
            Reporter: stack


In namespaces and acls, zk callbacks are used so all participating servers are notified when there is a change in acls/namespaces list.

The new visibility tags feature coming in copies the same model of using zk with listeners for the features' particular notifications.

Three systems each w/ their own implementation of the notifications all using zk w/ their own feature-specific watchers.

Should probably unify.

Do we have to go via zk?  Seems like all want to be notified when an hbase table is updated.  Could we tell servers directly rather than go via zk?



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