[jboss-jira] [JBoss JIRA] (JBCLUSTER-44) Farm service startup performs way too many file transfers

[Scott Marlow (JIRA)]

     [ https://issues.jboss.org/browse/JBCLUSTER-44?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Scott Marlow closed JBCLUSTER-44.
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> Farm service startup performs way too many file transfers
> ---------------------------------------------------------
>
>                 Key: JBCLUSTER-44
>                 URL: https://issues.jboss.org/browse/JBCLUSTER-44
>             Project: JBoss Clustering
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>         Environment: Jboss 4.0.2 final, Java 1.5.0_02
>            Reporter: Gabriele Garuglieri
>            Assignee: Scott Marlow
>             Fix For: Q2Y5
>
>         Attachments: JBCLUSTER-44-2.txt, JBCLUSTER-44.txt
>
>
> Suppose you have a cluster of N nodes and each node has A applications in the farm directory.
> Now you join node (N+1) to cluster, it receives N farmDeployments responses and pullNewDeployments() is called for each response.
> This means that each of the A applications is pulled from each of the N nodes for each call to pullNewDeployments().
> Now there are two problems, there are (N**2)*A transfers and for large values of N and A this may become a problem. It can be even worse if the size of A files is large and there may be a huge latency in startup.
> Second, given that by definition the farming service keeps in sync all the member of the cluster, once the A files are pulled from the first cluster member then i have [(N**2)*A]-A useless transfers.

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