How can I release memory automatically from presto-server?

[MoronHugh]

Here is my situation:
I have set the JVM memory=6G. And then, after I ran 3 query (each one is about 2G memory usage) , the presto-server process will take 6G memory all the time until I restart presto for wokers. So, I wonder is it posible to release the memory when presto got no new request or query?
Ps:
Presto version = 0.248
I have tried all the config below and it's not working:
query.min-expire-age = 1 m
query.max-history = 1
query.low-memory-killer.policy = total-reservation-on-blocked-nodes

Thanks.

[sutodi]

Facing the same issue. Any solution?

[MoronHugh]

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