Possibility of online upgrades with XSITE enabled

[andrey-dubnik]

Hi,

Currently if xsite is configured online upgrades are not possible. Can this rule be relaxed?

Why? if an upgrade happens offline this does mean taking the application down as well or taking a performance hit and it does not translates to a good experience for the users.

Downtime only upgrades can be explained by ISPN not supporting backup location with different versions but per our experience server simply takes backup offline till condition of similar versions can be met when we do downtime upgrades. From the experience standpoint it is irrelevant if we do upgrades offline or online as new server version won't be supporting backup till versions are the same on both ends. Am I missing something?

Thanks

[ryanemerson]

Thanks for raising this issue @andrey-dubnik. In order to support online upgrades with XSite, it's necessary for us to be able to guarantee wire compatibility between Infinispan versions so that Site A using an older Infinispan version can continue to communicate with Site B using the newly upgraded version. This is an area we're actively working on and we hope to have some improvements in this regards in the coming months.

You can track our progress by following ISPN-16028