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https://issues.apache.org/jira/browse/IGNITE-4809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16029526#comment-16029526
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Alexey Kuznetsov commented on IGNITE-4809:
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the problem emerges from offheap read : ctx.offheap().read(key). In method 
GridDhtColocatedCache#loadAsync(). This method returns collections with 2 
different values

> Cache.getAll can return partially commited results.
> ---------------------------------------------------
>
>                 Key: IGNITE-4809
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4809
>             Project: Ignite
>          Issue Type: Bug
>          Components: cache
>    Affects Versions: 1.7
>            Reporter: Andrew Mashenkov
>            Assignee: Alexey Kuznetsov
>             Fix For: 2.1
>
>         Attachments: DirtyReads2.java
>
>
> 1. Create tansactional cache with Long values and fill it with zeroes.
> 2. Start thread that would increment all values in single transaction.
> 3. Start thread that would check all values are same in single transaction.
> Second thread will see partial commits, but shouldn't.



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