[jira] [Commented] (IGNITE-12033) Callbacks from striped pool due to async/await may hang cluster

["Maxim Muzafarov (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-12033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16948588#comment-16948588 ] 

Maxim Muzafarov commented on IGNITE-12033:
------------------------------------------

Folks,

I've updated a bit the issue description. It seems we don't need to create a separate ticket to solve this issue on java side.

> Callbacks from striped pool due to async/await may hang cluster
> ---------------------------------------------------------------
>
>                 Key: IGNITE-12033
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12033
>             Project: Ignite
>          Issue Type: Bug
>          Components: cache, platforms
>    Affects Versions: 2.7.5
>            Reporter: Ilya Kasnacheev
>            Assignee: Pavel Tupitsyn
>            Priority: Critical
>             Fix For: 2.8
>
>
> Discussed on dev-list:
> http://apache-ignite-developers.2346864.n4.nabble.com/Re-EXTERNAL-Re-Replace-or-Put-after-PutAsync-causes-Ignite-to-hang-td42921.html
> *Must use the public pool for callbacks as the most obvious step.*
> ----
> http://apache-ignite-users.70518.x6.nabble.com/Replace-or-Put-after-PutAsync-causes-Ignite-to-hang-td27871.html#a28051
> There's a reproducer project. Long story short, .Net can invoke cache operations with future callbacks, which will be invoked from striped pool. If such callbacks are to use cache operations, those will be possibly sheduled to the same stripe and cause a deadlock.
> The code is very simple:
> {code}
>                 Console.WriteLine("PutAsync");
>                 await cache.PutAsync(1, "Test");
>                 Console.WriteLine("Replace");
>                 cache.Replace(1, "Testing"); // Hangs here
>                 Console.WriteLine("Wait");
>                 await Task.Delay(Timeout.Infinite); 
> {code}
> async/await should absolutely not allow any client code to be run from stripes.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)