Thanks Zian Chen, you don't have to mark it to be WIP unless it is not a finished feature (without tests, cannot compile, not functional, etc.).
I suggest to keep it simple. Just remove Defaults to -1 which disables it. from the original doc, and states that
1) Value is between 0 and 100.
2) Admin needs to make sure absolute maximum capacity >= absolute capacity for each queue.
And also, what's the behavior of specifying "-1" to maximum capacity? We should document that as well.
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13553 (See https://builds.apache.org/job/Hadoop-trunk-Commit/13553/)
YARN-7628. [Documentation] Documenting the ability to disable elasticity (wangda: rev 051ad9d63f41ae98be728a7cdbdad9b072316318)