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https://issues.apache.org/jira/browse/GEODE-8240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17149768#comment-17149768
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ASF GitHub Bot commented on GEODE-8240:
---------------------------------------

Bill commented on pull request #5334:
URL: https://github.com/apache/geode/pull/5334#issuecomment-652726465


   OK after https://github.com/apache/geode/pull/5336 is merged to 1.13, I'll 
merge this one to 1.12


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> View has old locator version number after rolling upgrade
> ---------------------------------------------------------
>
>                 Key: GEODE-8240
>                 URL: https://issues.apache.org/jira/browse/GEODE-8240
>             Project: Geode
>          Issue Type: Bug
>          Components: client/server, membership
>            Reporter: Ernest Burghardt
>            Assignee: Bill Burcham
>            Priority: Major
>
> as shown in [https://github.com/apache/geode/pull/5224]
> locator upgrade from version 1.12.0 doesn't seem to occur 
> {{testRollServersOnPartitionedRegion_dataserializable}}  failure results:
> Expecting:
>  <"Member Count : 3
>  Name | Id
>  ---- | 
> -------------------------------------------------------------------------------
>  vm2 | 127.0.0.1(vm2:35019:locator)<ec><v17>:41000(version:GEODE 1.12.0) 
> [Coordinator]
>  vm0 | 10.0.0.111(vm0:35025)<v27>:41001
>  vm1 | 10.0.0.111(vm1:35030)<v29>:41002
>  ">
>  not to contain:
>  <"1.12.0">
> This problem was introduced in 1.12.0 and is present in all lines derived 
> from that one, including 9.10, 1.13, and current develop/1.14
> What's actually happening is that the locator _is_ upgraded to a newer 
> version. It joins with an older coordinator (that's running e.g. 1.12.0) and 
> that coordinator produces a view showing the new locator/member as running 
> the same version, in this case 1.12.0, as the coordinator.
> Eventually, all locators will be upgraded. But the view carries the incorrect 
> version indication.
> The root cause seems to be that when {{GMSMemberData.setVersionObject(short 
> versionOrdinal)}} sees a version ordinal that is unknown, i.e. a version 
> ordinal corresponding to a new line of development: 1.13, 1.14, … that method 
> throws away that version ordinal and replaces it with the one for the 1.12 
> line.
> Since the current {{support/1.13}} and {{develop}} branches have the bug 
> upgrading a current 1.13 to 1.14 or a current development/1.14 to 1.15 would 
> exhibit the same behavior (locator apparently stuck at the older version in 
> the view.)
> Ramifications of this incorrect version indication in the view are TBD.
> Whether or not this situation resolves itself after _another_ round of 
> restarts is TBD.



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