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https://issues.apache.org/jira/browse/IGNITE-9031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16578968#comment-16578968
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Valentin Kulichenko commented on IGNITE-9031:
---------------------------------------------

[~aakhmedov], change makes sense to me. However, just to make sure: does this 
need any synchronization? If {{onApplicationEvent}} method can be called by two 
threads concurrently, then the code is not thread-safe. But I would assume that 
Spring either always does this in a single thread, or has a sync lock. Can you 
please check this and confirm?

> SpringCacheManager throws AssertionError during Spring initialization
> ---------------------------------------------------------------------
>
>                 Key: IGNITE-9031
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9031
>             Project: Ignite
>          Issue Type: Bug
>          Components: spring
>    Affects Versions: 2.6
>            Reporter: Joel Lang
>            Assignee: Amir Akhmedov
>            Priority: Major
>
> When initializing Ignite using an IgniteSpringBean and also having a 
> SpringCacheManager defined, the SpringCacheManager throws an AssertionError 
> in the onApplicationEvent() method due to it being called more than once.
> There is an "assert ignite == null" that fails after the first call.
> This is related to the changes in IGNITE-8740. This happened immediately when 
> I first tried to start Ignite after upgrading from 2.5 to 2.6.



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