Alexey Goncharuk created IGNITE-13753:
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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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