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From "Christopher G. Stach II (JIRA)" <j...@apache.org>
Subject [jira] Updated: (AMQ-747) Redelivery backoff should add random delay for collision avoidance
Date Fri, 16 Jun 2006 17:32:51 GMT
     [ https://issues.apache.org/activemq/browse/AMQ-747?page=all ]

Christopher G. Stach II updated AMQ-747:
----------------------------------------

    Attachment: AMQ-747.patch

Here you go!

> Redelivery backoff should add random delay for collision avoidance
> ------------------------------------------------------------------
>
>          Key: AMQ-747
>          URL: https://issues.apache.org/activemq/browse/AMQ-747
>      Project: ActiveMQ
>         Type: Improvement

>   Components: Connector
>     Versions: 4.0
>     Reporter: Christopher G. Stach II
>      Fix For: 4.1
>  Attachments: AMQ-747.patch
>
>
> If a rollback on two messages happens between three transactional deliveries, and the
two messages are redelivered with the same redelivery backoff settings, there is a likelihood
that both messages will cause another rollback to happen.  If maximumRedeliveries is set too
low, or there are a maximumRedeliveries + 1 messages coming in simultaneously, messages may
never get delivered.  Can we get another option for the clients that adds a random backoff
delay adjustment in addition to the constant backoff delay factor?  This would end up working
like most other collision avoidance algorithms.

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