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From "Alexey Goncharuk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-10154) Critical worker liveness check configuration is non-trivial and inconsistent
Date Mon, 12 Nov 2018 12:58:01 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-10154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16683762#comment-16683762
] 

Alexey Goncharuk commented on IGNITE-10154:
-------------------------------------------

Looks good to me, thanks!

> Critical worker liveness check configuration is non-trivial and inconsistent
> ----------------------------------------------------------------------------
>
>                 Key: IGNITE-10154
>                 URL: https://issues.apache.org/jira/browse/IGNITE-10154
>             Project: Ignite
>          Issue Type: Task
>    Affects Versions: 2.7
>            Reporter: Artem Budnikov
>            Assignee: Andrey Gura
>            Priority: Major
>             Fix For: 2.7
>
>
> The way the critical thread liveness check is configured has a number of usability issues.
> 1) By default, the liveness check is disabled (i.e. if no failure handler is specified
in the configuration). However, if you specify any handler (including the default one), liveness
check gets enabled (which is something the users may not want) unless you disable it explicitly.
> 2) Users that use Ignite 2.6 with a configured failure handler will get this check enabled
after migrating to Ignite 2.7.
> In the two cases above, the functionality changes in a non-trivial way. Ideally, we need
an option that enables this functionality explicitly. A possible example would be to keep
liveness check disabled until the user sets the systemWorkerBlockedTimeout to a positive value.
(Or the other way around: enable liveness check by default until the user explicitly disables
it).



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