Hello,

we were facing a memory leak with 3.11.0 
(https://issues.apache.org/jira/browse/CASSANDRA-13754) thus upgraded our 
loadtest environment to a snapshot build of 3.11.1. Having it running for > 48 
hrs now, we still see a steady increase on heap utilization.

Eclipse memory analyzer shows 147 instances of io.netty.util.Recycler$Stack 
with a total retained heap usage of ~ 1,8G, growing over time.

Should this be fixed already by CASSANDRA-13754 or is this something new?

Thanks,
Thomas

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