[jira] [Updated] (IGNITE-15398) NioEventLoopGroup threads leakage

["Mirza Aliev (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-15398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mirza Aliev updated IGNITE-15398:
---------------------------------
    Attachment: screenshot-1.png

> NioEventLoopGroup threads leakage
> ---------------------------------
>
>                 Key: IGNITE-15398
>                 URL: https://issues.apache.org/jira/browse/IGNITE-15398
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Andrey Mashenkov
>            Assignee: Mirza Aliev
>            Priority: Blocker
>              Labels: ignite-3
>             Fix For: 3.0.0-alpha3
>
>         Attachments: screenshot-1.png, screenshot-2.png
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I've run a simple test and face OOM on 7 of 100 iterations.
> Seems, thread leakage is a reason.
> Use JVM arg `-Xmx512M` to run the test, otherwise more iterations may be required.
> {code:java}
>  @RepeatedTest(100)
>     public void nodeRestart100Test() throws Exception {
>         List<Ignite> grid = startGrid();
>         IgniteUtils.closeAll(Lists.reverse(grid));
>     }
> {code}
> Thread dump shows a huge number of parked NioEventLoopGroup and JRaft-Request-Processor.
> Further investigation shows most of NioEventLoopGroup threads are acceptor threads created in startEndpoint() method of RestModule and ClientModule classes.



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