[jboss-jira] [JBoss JIRA] Issue Comment Edited: (JGRP-1181) PING messages to entire cluster limit scalability.

[Bela Ban (JIRA)]

    [ https://jira.jboss.org/browse/JGRP-1181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12551515#action_12551515 ] 

Bela Ban edited comment on JGRP-1181 at 9/17/10 8:41 AM:
---------------------------------------------------------

Another possibility could be to define a number N which is a rank; everyone higher than N does NOT response. 
Example: we have {A,B,C,D,E,F,G}. If we set N=3, then that means that A, B and C will respond, but nobody else.

This is the same as saying the oldest N members should reply.

If A leaves, then we'll have view {B,C,D,E,F,G} and with N=3, B, C and D will respond.

N <= 0 means everyone will reply.

N = 1 means only the coordinator will reply

      was (Author: bela at jboss.com):
    Another possibility could be to define a number N which is a rank; everyone higher than N does NOT response. 
Example: we have {A,B,C,D,E,F,G}. If we set N=3, then that means that A, B and C will respond, but nobody else.

This is the same as saying the oldest N members should reply.

If A leaves, then we'll have view {B,C,D,E,F,G} and with N=3, B, C and D will respond.

N <= 0 means everyone will reply.
  
> PING messages to entire cluster limit scalability.
> --------------------------------------------------
>
>                 Key: JGRP-1181
>                 URL: https://jira.jboss.org/browse/JGRP-1181
>             Project: JGroups
>          Issue Type: Feature Request
>            Reporter: Jonathan Oddy
>            Assignee: Bela Ban
>             Fix For: 2.11
>
>
> PING messages generate a response from every node that receives them. In a large cluster this will lead to a large number of responses needing to be processed. Making PINGs target-able (e.g. ping to only coordinators, ping to anyone with a view not matching ViewID N) could significantly reduce the number of nodes responding to a request.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira