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From "Alexey Goncharuk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-2854) Need to implement deadlock detection
Date Mon, 28 Mar 2016 17:34:25 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-2854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15214519#comment-15214519
] 

Alexey Goncharuk commented on IGNITE-2854:
------------------------------------------

The approach sounds good. However, I would leave the option to automatically rollback the
oldest transaction in a deadlock to be configured - in some cases it makes sense to only rollback
such transactions from a management tool.

> Need to implement deadlock detection
> ------------------------------------
>
>                 Key: IGNITE-2854
>                 URL: https://issues.apache.org/jira/browse/IGNITE-2854
>             Project: Ignite
>          Issue Type: New Feature
>          Components: cache
>    Affects Versions: 1.5.0.final
>            Reporter: Valentin Kulichenko
>            Assignee: Andrey Gura
>             Fix For: 1.6
>
>
> Currently, if transactional deadlock occurred, there is no easy way to find out which
locks were reordered.
> We need to add a mechanism that will collect information about awating candidates, analyze
it and show guilty keys. Most likely this should be implemented with the help of custom discovery
message.
> In addition we should automatically execute this mechanism if transaction times out and
add information to timeout exception.



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