[jboss-jira] [JBoss JIRA] Commented: (JBAS-7102) Problem sending large files via farm service

[Brian Stansberry (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBAS-7102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12498384#action_12498384 ] 

Brian Stansberry commented on JBAS-7102:
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"The last chunk gets dropped by JGroups so there is no response." -- that's badly worded, so clarification here. 

First, JGroups doesn't drop the message; the network does. For point-to-multipoint message JGroups (NAKACK) doesn't detect the last message was lost until there is another message. Since the sender is blocking waiting for an RPC response, it doesn't send another message. Only after the RPC timeout passes and the sender sends messages with the next file chunk is the dropped message detected. JGroups then retransmits the dropped message; i.e. it's not lost, just delayed.

> Problem sending large files via farm service
> --------------------------------------------
>
>                 Key: JBAS-7102
>                 URL: https://jira.jboss.org/jira/browse/JBAS-7102
>             Project: JBoss Application Server
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Clustering, ProfileService
>    Affects Versions: JBossAS-5.1.0.GA
>            Reporter: Brian Stansberry
>            Assignee: Brian Stansberry
>             Fix For: JBossAS-6.0.0.M3
>
>
> Users have reported issues sending large files over the AS 5.1 farming service; see forum thread.

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