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From "Ivan Pavlukhin (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (IGNITE-9322) MVCC: implement deadlock detector
Date Tue, 18 Dec 2018 07:18:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-9322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16721152#comment-16721152

Ivan Pavlukhin edited comment on IGNITE-9322 at 12/18/18 7:17 AM:

[~gvvinblade] could you please review changes? There are still some points to agree on.

was (Author: pavlukhin):
[~gvvinblade] could you please review changes? There are still some point to agree on.

> 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
>              Labels: MakeTeamcityGreenAgain
> 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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