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https://issues.apache.org/jira/browse/IGNITE-26754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18031347#comment-18031347
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Sergey Chugunov commented on IGNITE-26754:
------------------------------------------

As the last time TC Bot falsly reported "No blockers", I double-checked tests 
in question. They seem to be ok: 
https://ci2.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_PdsCompatibility&branch_IgniteTests24Java8=pull%2F12432%2Fhead&tab=buildTypeStatusDiv

> Changes in ClusterNode serialization broke binary compatibility
> ---------------------------------------------------------------
>
>                 Key: IGNITE-26754
>                 URL: https://issues.apache.org/jira/browse/IGNITE-26754
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.18
>            Reporter: Sergey Chugunov
>            Assignee: Sergey Chugunov
>            Priority: Blocker
>              Labels: ise
>             Fix For: 2.18
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> After IGNITE-26211 merged it turned out that code in master became 
> incompatible and is unable to read some metastorage keys written by older 
> versions.
> Changes in TcpDiscoveryNode and ZookeeperClusterNode serialization are needed 
> to overcome this issue.



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