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https://issues.apache.org/jira/browse/IGNITE-9322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16685097#comment-16685097
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Ivan Pavlukhin commented on IGNITE-9322:
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Some points which are desirable:
* Ability to break deadlock without a need to configure timeouts explicitly.
* Negligible overhead of deadlock detection.
Some unclear moments (possibly a subject for future improvements):
* How to choose a victim transaction?
> MVCC: implement deadlock detector
> ---------------------------------
>
> Key: IGNITE-9322
> URL: https://issues.apache.org/jira/browse/IGNITE-9322
> Project: Ignite
> Issue Type: Task
> Components: mvcc
> Reporter: Vladimir Ozerov
> Assignee: Ivan Pavlukhin
> Priority: Major
>
> Deadlocks are not uncommon during SQL execution.
> We need to implement distributed deadlock detection protocol for MVCC.
> Essentially, nodes should exchange some map of tx wait lists, and try to find
> a loop. If loop is found, then one of problematic transactions should be
> rolled back.
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