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https://issues.apache.org/jira/browse/IGNITE-6380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16173315#comment-16173315
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Anton Vinogradov commented on IGNITE-6380:
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Simplified reproducer:

> Exception should be thrown on cache creation attempt inside transaction
> -----------------------------------------------------------------------
>
>                 Key: IGNITE-6380
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6380
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Yakov Zhdanov
>            Assignee: Pavel Pereslegin
>              Labels: newbie, usability
>
> Exception should be thrown on cache creation attempt inside transaction to 
> prevent deadlocks since cache start triggers exchange and exchange cannot 
> finish until all txs are finished.
> We need to check if thread owns a tx before starting cache and if it does 
> then IllegalStateException should be thrown.



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