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From "Alexey Goncharuk (Jira)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-13753) Non-thread-safe collection is used for the list of registered MBeans in JmxMetricExporterSpi
Date Tue, 24 Nov 2020 14:47:00 GMT
Alexey Goncharuk created IGNITE-13753:
-----------------------------------------

             Summary: 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


{{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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