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https://issues.apache.org/jira/browse/IGNITE-23748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Pligin reassigned IGNITE-23748:
----------------------------------------

    Assignee: Roman Puchkovskiy

> Lock LWM when executing an RO transaction on a data node
> --------------------------------------------------------
>
>                 Key: IGNITE-23748
>                 URL: https://issues.apache.org/jira/browse/IGNITE-23748
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Roman Puchkovskiy
>            Assignee: Roman Puchkovskiy
>            Priority: Critical
>              Labels: ignite-3, important
>             Fix For: 3.0
>
>
> Global watermark mechanism proposed in IGNITE-23401 seems to be too complex, 
> here a replacement is defined.
>  # We need to lock local LWM not just on the coordinator (as it's done now), 
> but on every data node that executes the RO transaction in question
>  # If an attempt to lock local LWM with the RO transaction read timestamp 
> fails, we need to return a failure instead of just ignoring the failure (it 
> seems that now we just ignore it)
>  # When an RO transaction is finished, we must unlock local LWM (for this 
> transaction) on each node that participated in the transaction



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