[mod_cluster-issues] [JBoss JIRA] (MODCLUSTER-449) Implement ramp-up when starting new nodes

Bogdan Sikora (JIRA) issues at jboss.org
Thu Sep 8 08:26:00 EDT 2016


    [ https://issues.jboss.org/browse/MODCLUSTER-449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290537#comment-13290537 ] 

Bogdan Sikora edited comment on MODCLUSTER-449 at 9/8/16 8:25 AM:
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Undertow balancer with 2 (Load 10) nodes and in the middle third (Load 90) node
!undertowRamp-up.jpg|thumbnail!


was (Author: bsikora):
Undertow balancer with 2 (Load 10) nodes and in the middle third (Load 90) node

> Implement ramp-up when starting new nodes
> -----------------------------------------
>
>                 Key: MODCLUSTER-449
>                 URL: https://issues.jboss.org/browse/MODCLUSTER-449
>             Project: mod_cluster
>          Issue Type: Feature Request
>          Components: Core & Container Integration (Java)
>    Affects Versions: 1.2.0.Final, 1.3.0.Final
>            Reporter: Radoslav Husar
>            Assignee: Radoslav Husar
>            Priority: Critical
>             Fix For: 2.0.0.Alpha1
>
>         Attachments: httpdRamp-up.jpg, undertowRamp-up.jpg
>
>
> IIUC this has been a problem since inception. The problem is that the initial load stays in effect for performing load-balancing decisions until a new stat interval kicks in. 
> This effect is mitigated by load decay over time, but for the time a new node joins in, it can get overloaded upon startup.



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