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From "Robert Stupp (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-13114) 3.0.x: update netty
Date Wed, 25 Jan 2017 13:09:26 GMT


Robert Stupp commented on CASSANDRA-13114:

No objections regarding a _minor_ netty upgrade, if that solves real SSL issues / an existing
bug.  I'd just be very careful with dependency changes since 4.0.37 introduced a couple of
Would setting {{-XX:MaxDirectMemorySize=SomeBigValue}} help in this case?
However, I do object introducing the new stuff from CASSANDRA-12032 in 2.2 or 3.0, because
it is a new thing, which is disabled by default in 3.x.

> 3.0.x: update netty
> -------------------
>                 Key: CASSANDRA-13114
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Tom van der Woerdt
> updated netty for Cassandra 3.8,
but this wasn't backported. Netty 4.0.23, which ships with Cassandra 3.0.x, has some serious
bugs around memory handling for SSL connections.
> It would be nice if both were updated to 4.0.42, a version released this year.
> 4.0.23 makes it impossible for me to run SSL, because nodes run out of memory every ~30
minutes. This was fixed in 4.0.27.

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