[jira] [Assigned] (IGNITE-13753) Non-thread-safe collection is used for the list of registered MBeans in JmxMetricExporterSpi

["Alexey Goncharuk (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-13753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexey Goncharuk reassigned IGNITE-13753:
-----------------------------------------

    Assignee: Alexey Goncharuk

> Non-thread-safe collection is used for the list of registered MBeans in JmxMetricExporterSpi
> --------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-13753
>                 URL: https://issues.apache.org/jira/browse/IGNITE-13753
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Alexey Goncharuk
>            Assignee: Alexey Goncharuk
>            Priority: Major
>
> {{MetricManager}} registry creation and remove listeners can be invoked concurrently (the only synchronization is via {{map.computeIfAbsent}} which provides key-level granularity.
> As a result, some of the beans are lost and I get an occasional assertion on 
> {code}
> boolean rmv = mBeans.remove(mbeanName);
> assert rmv;
> {code}
> Changing the collection to a synchronized list should suffice.



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