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https://issues.apache.org/jira/browse/CASSANDRA-18831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17862873#comment-17862873
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Josh McKenzie edited comment on CASSANDRA-18831 at 7/3/24 7:25 PM:
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Pushed another 
[commit|https://github.com/jmckenzie-dev/cassandra/commit/d6424ad6e01295f691ea5ebe31e1350ad89b9dda]
 that takes JDK21 support to passing unit and in-jvm dtests. The branch should 
be in a state where we can start doing prelim perf testing and fuzz testing 
against it. Specifying no UseCompressedOops to work around jamm having 
incorrect default if not specified for JDK21; annotated to change that in 
lockstep w/ZGC in the .options file.

Plan to get python dtests into a good place and do some testing with genZGC; 
will update as more comes online.


was (Author: jmckenzie):
Pushed another commit that takes JDK21 support to passing unit and in-jvm 
dtests. The branch should be in a state where we can start doing prelim perf 
testing and fuzz testing against it. Specifying no UseCompressedOops to work 
around jamm having incorrect default if not specified for JDK21; annotated to 
change that in lockstep w/ZGC in the .options file.

Plan to get python dtests into a good place and do some testing with genZGC; 
will update as more comes online.

> Enable Cassandra to build and run under JDK21
> ---------------------------------------------
>
>                 Key: CASSANDRA-18831
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18831
>             Project: Cassandra
>          Issue Type: Task
>          Components: Build
>            Reporter: Achilles Benetopoulos
>            Assignee: Josh McKenzie
>            Priority: Normal
>             Fix For: 5.x
>
>         Attachments: jdk21-patch
>
>
> This patch builds on the work in CASSANDRA-16895 that added JDK17 to the list 
> of supported Java versions, and extends that work to enable building and 
> running Cassandra under JDK21.
> The following commits comprise the changes included in the attached patch:
>  - 
> [https://github.com/apache/cassandra/commit/b15d4d6980e787ab5f3405ca8cb17a9c92a4aa47]
>  - 
> [https://github.com/apache/cassandra/commit/0c5df38dafe58bfec8924e81507bb604e1543897]
>  - 
> [https://github.com/apache/cassandra/commit/6506b7279d98eed4b2b65b71e0c6f41eb78c6913]
>  - 
> [https://github.com/apache/cassandra/commit/564cbd534c5a975cda0c629c14c68c8745b41451]



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