Summary

Remove "jmx.remote.x.buffer.size" as a System Property and a JMX environment property. The correct name was always "jmx.remote.x.notification.buffer.size" and was correct from JDK 6, but the alternate name was recognised to aid compatibilty.

Problem

Used as a System Property and a JMX Environment setting, jmx.remote.x.buffer.size was a previous and incorrect name for the jmx.remote.x.notification.buffer.size property.
The old name was recognised to aid compatibility. This relates do:

6174229: Environment parameter should be notification.buffer.size instead of buffer.size Fixed in JDK 6, in 2004, and also in JDK 5u6.

We should only recognise the correct name at this point.

Solution

Remove the code that reads the Property "jmx.remote.x.buffer.size", the conditions related to it, and update tests.

New behaviour will be the same as current behaviour with the property unset.

Specification

No specification change. Property is not documented in the JDK.

Github PR for reference: https://github.com/openjdk/jdk/pull/23145