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From "Ivan Pavlukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-5935) MVCC TX: Tx recovery protocol
Date Sun, 30 Sep 2018 14:00:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-5935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16633377#comment-16633377

Ivan Pavlukhin commented on IGNITE-5935:

We should support recovery in slightly different scenarios depending on following:
 * Is failed node server?
 * Is failed node mvcc coordinator?

> MVCC TX: Tx recovery protocol
> -----------------------------
>                 Key: IGNITE-5935
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5935
>             Project: Ignite
>          Issue Type: Task
>          Components: cache, mvcc
>            Reporter: Semen Boikov
>            Assignee: Ivan Pavlukhin
>            Priority: Major
>             Fix For: 2.7
> Transaction recovery procedure is initiated when near node failed before transaction
was finished.
> In MVCC transactions _partition update counter_ modification is started on prepare phase.
If a transaction was prepared at least on one node we need to finish _partition update counter_
modification consistently on all participating nodes.
> Also recovered transaction should be removed from active transactions list on mvcc coordinator.

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