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https://issues.apache.org/jira/browse/IGNITE-6069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16268459#comment-16268459
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Michael Griggs edited comment on IGNITE-6069 at 4/4/18 7:38 PM:
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It is essential that server nodesĀ *not* need to be stopped in order to deploy a 
new service. This implies that we have peer-class loading for Service 
interfaces and implementations.


was (Author: endian675):
It is essential that server nodes must need to be stopped in order to deploy a 
new service.  This implies that we have peer-class loading for Service 
interfaces and implementations.

> Service versioning
> ------------------
>
>                 Key: IGNITE-6069
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6069
>             Project: Ignite
>          Issue Type: New Feature
>          Components: general
>    Affects Versions: 2.1
>            Reporter: Ilya Lantukh
>            Assignee: Ilya Lantukh
>            Priority: Major
>
> Make services upgradable -again-. 
> Main points:
> - compute binary type ID by (classname + version)
> - use serialVersionUuid as version ( ?)
> - all service instances with the same name must have the same version
> - make ServiceProxy aware of versions and upgrade process, pause requests 
> while service is being upgraded
> - extend Service interface (UpgradableService?) - add ability to collect 
> state of previous version before start.
> Once the feature is implemented, it has to be documented extensively. The 
> ticket must not be closed until this happens.



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