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https://issues.apache.org/jira/browse/IGNITE-8474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16478920#comment-16478920
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ASF GitHub Bot commented on IGNITE-8474:
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Github user asfgit closed the pull request at:
https://github.com/apache/ignite/pull/3990
> WalStateNodeLeaveExchangeTask prevents merge exchanges on leaving many nodes
> ----------------------------------------------------------------------------
>
> Key: IGNITE-8474
> URL: https://issues.apache.org/jira/browse/IGNITE-8474
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 2.5
> Reporter: Sergey Chugunov
> Assignee: Sergey Chugunov
> Priority: Major
> Fix For: 2.6
>
>
> Exchange merge mechanism provides huge optimization when a lot of nodes join
> or leave cluster simultaneously.
> In IGNITE-7003 WalStateNodeLeaveExchangeTask custom exchange task was added
> which is generated for each NODE_LEFT/NODE_FAILED event.
> Because of property skipForExchangeMerge set to false on this task it
> prohibits exchange merge optimization.
> The property needs to be reconsidered and changed if it is not crucial for
> this functionality.
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