This feature is poorly understood and supported. We are currently working on a new feature with slab allocators and buddy allocation scheme. In addition, we also have the ability to run without freelist at all, and use jemalloc or tcmalloc instead.
This is tracked in the Jira
https://issues.apache.org/jira/browse/TS-3542
and
https://issues.apache.org/jira/browse/TS-3122
Unless we hear otherwise within 1 week, this will be implemented for 6.0.0.
— Leif
