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https://issues.apache.org/jira/browse/CASSANDRA-17992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17624499#comment-17624499
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Ekaterina Dimitrova edited comment on CASSANDRA-17992 at 10/26/22 2:21 PM:
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{quote}Do you have a reference to the exceptions we were seeing?
{quote}
Unfortunately, those CircleCI runs logs have expired. I will try to bump the
version later today and try on a recent rebase with JDK17.
But this is an excerpt I found in my TODO list:
{code:java}
java.lang.ClassCastException: class
org.apache.cassandra.utils.memory.BufferPool$Chunk cannot be cast to class
sun.nio.ch.DirectBuffer{code}
{quote}I vaguely recall that it only supports {{DirectByteBuffer}} now, which
is probably quite straightforward to resolve.
{quote}
Quite possible. I haven't dug into it yet, just literally put it on the list
just as a thing to consider when the time comes. Thank you for the hint.
was (Author: e.dimitrova):
{quote}Do you have a reference to the exceptions we were seeing?
{quote}
Unfortunately, those CircleCI runs logs have expired. I will try to bump the
version later today and try on a recent rebase with JDK17.
But this is an excerpt I found in my TODO list:
java.lang.ClassCastException: class
org.apache.cassandra.utils.memory.BufferPool$Chunk cannot be cast to class
sun.nio.ch.DirectBuffer
{quote}I vaguely recall that it only supports {{DirectByteBuffer}} now, which
is probably quite straightforward to resolve.
{quote}
Quite possible. I haven't dug into it yet, just literally put it on the list
just as a thing to consider when the time comes. Thank you for the hint.
> Upgrade Netty on 4.x(current trunk)
> -----------------------------------
>
> Key: CASSANDRA-17992
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17992
> Project: Cassandra
> Issue Type: Task
> Components: Dependencies
> Reporter: Ekaterina Dimitrova
> Priority: Low
> Fix For: 4.x
>
>
> I haven't been able to identify from the Netty docs which was the lowest
> version where JDK17 was added but we are about 40 versions behind in netty 4
> so I suspect we better update.
> We need to consider there was an issue with class cast exceptions when
> building with JDK17 with newer versions of netty (the newest available in
> March 2022). For the record, we didn't see those when running CI on JDK8 and
> JDK11. We also need to carefully revision the changes between the netty
> versions.
> Upgrading will cover also a fix that was discussed in
> [this|https://the-asf.slack.com/archives/CK23JSY2K/p1665567660202989] ASF
> Slack thread.
> CC [~benedict] , [~aleksey]
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