Monitor JVM memory and add it to memory control

[chenzl25]

Is your feature request related to a problem? Please describe.

Since we use an embedded JVM to support the embedded connector node, it is important to monitor the JVM memory consumption and let our memory controller know the full view of the memory. JVM provides a way for us to fetch the allocated and active memory just like jemalloc-ctl. We can utilize them to make a better memory controller.

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Describe alternatives you've considered

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Additional context

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