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https://issues.apache.org/jira/browse/IGNITE-12554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Pavlukhin reassigned IGNITE-12554:
---------------------------------------

    Assignee: Ivan Pavlukhin

> Ignite instance couldn't be restarted if it's parent thread group has been 
> called destroy once
> ----------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-12554
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12554
>             Project: Ignite
>          Issue Type: Bug
>          Components: cache
>    Affects Versions: 2.7.6
>            Reporter: ha faculty
>            Assignee: Ivan Pavlukhin
>            Priority: Major
>         Attachments: NodeRestartTesting.java
>
>
> I am using an inhouse platform which manage the life cycle of ignite instance 
> by calling ignition.start() and ignition.stop() from a web application.
> it could be started without issue for the first time. however, if it stop the 
> ignite by calling ignition.stop() and followed by destroying the parent 
> thread group which starting it.
> Calling ignition.start() in the 2nd time will throw the following exception 
> Exception in thread "kickOff" java.lang.IllegalThreadStateExceptionException 
> in thread "kickOff" java.lang.IllegalThreadStateException at 
> java.lang.ThreadGroup.addUnstarted(ThreadGroup.java:867) at 
> java.lang.Thread.init(Thread.java:405) at 
> java.lang.Thread.init(Thread.java:349) at 
> java.lang.Thread.<init>(Thread.java:599) at 
> org.apache.ignite.thread.IgniteThread.<init>(IgniteThread.java:96) at 
> org.apache.ignite.internal.util.StripedExecutor$Stripe.start(StripedExecutor.java:474)
>  at 
> org.apache.ignite.internal.util.StripedExecutor.<init>(StripedExecutor.java:121)
>  at 
> org.apache.ignite.internal.util.StripedExecutor.<init>(StripedExecutor.java:80)
>  at 
> org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start0(IgnitionEx.java:1842)
>  at 
> org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start(IgnitionEx.java:1730)
>  at org.apache.ignite.internal.IgnitionEx.start0(IgnitionEx.java:1158) at 
> org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:589) at 
> org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:565) at 
> org.apache.ignite.Ignition.start(Ignition.java:305) at 
> com.faculty.poc.ignite.app.NodeRestartTesting.run(NodeRestartTesting.java:60) 
> at java.lang.Thread.run(Thread.java:748)
> Please find my demo code for this issue.
> Walk through into Ignite code, it should be caused by a static thread group 
> created in IgniteThread class. (private static final ThreadGroup DFLT_GRP = 
> new ThreadGroup("ignite")
> Destroyed the parent thread group which start the ignite instance will result 
> in causing the DFLT_GRP go into destroyed state. Therefore, when Ignite was 
> start ifor the 2nd time, this static thread group has been destroyed and no 
> longer able to run the ignite. 
>  
>  



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