[FLINK-4087] [metrics] Improved JMX port handling #2127
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closing this for now as there are a few PowerMock issues. |
This was referenced Jul 9, 2021
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This PR modifies the JMX port handling.
Instead of setting a specific configured port on JVM start-up we use an ephemeral port for the JVM's JMXServer.
Inside the JVM we then spin-up another JMXServer which users can connect to. This JMXServer picks a port from a configured port range; iterating from start to end until it finds an open one.