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https://issues.apache.org/jira/browse/IGNITE-29224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladislav Pyatkov reassigned IGNITE-29224:
------------------------------------------

    Assignee: Vladislav Pyatkov

> Misleading affinity history error when ready affinity version lags behind 
> exchange future completion
> ----------------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-29224
>                 URL: https://issues.apache.org/jira/browse/IGNITE-29224
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Vladislav Pyatkov
>            Assignee: Vladislav Pyatkov
>            Priority: Major
>         Attachments: ready-affinity-version-reproducer.patch
>
>
> {{awaitPartitionMapExchange()}} can fail with:
> {noformat}
> Getting affinity for too old topology version that is already out of history
> {noformat}
> This message is misleading in this case: no affinity history has been 
> evicted. The exchange future is already completed, but 
> {{readyAffinityVersion()}} is updated later in its completion listener. 
> During this gap, {{awaitPartitionMapExchange()}} can request affinity for a 
> version preceding the creation of the cache. Increasing 
> {{IGNITE_AFFINITY_HISTORY_SIZE}} does not address this race.
> The waiting logic should account for publication of the ready affinity 
> version, and the diagnostic should distinguish this case from actual history 
> eviction.
> *Reproducer:* apply [^ready-affinity-version-reproducer.patch] and run 
> {{AwaitPartitionMapExchangeReadyVersionTest#testWaitPartitionMapExchangeWithLagOfReadyAffinity}}.
>  The patch adds a temporary pause before the ready affinity version is 
> published. It is diagnostic code supplied only for reproduction and is not 
> intended to be committed.



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