Hi Rory,

Apache Tomcat's build and tests passed successfully with JDK 17-ea+18-1490
on Linux x86_64 and aarch64!

Regards,
Martin

On Tue, Apr 20, 2021 at 1:35 PM Rory O'Donnell <rory.odonn...@oracle.com>
wrote:

>
> *Hi Mark, *
>
> *OpenJDK 17 Early Access build 18****is now available at
> **https://jdk.java.net/17 <https://jdk.java.net/17>*
>
>   * These early-access , open-source builds are provided under the
>       o GNU General Public License, version 2, with the Classpath
>         Exception <https://openjdk.java.net/legal/gplv2+ce.html>
>   * Release Notes are available at http://jdk.java.net/17/release-notes
>     <https://jdk.java.net/17/release-notes>
>
>
> **G1 pauses may be extremely long with EA build JDK-17+18*
>
> *During performance testing we noticed that due to a recent change
> (JDK-8262068) GC pauses after a G1 full GC may be extremely slow. The
> problem has been fixed with JDK-8264987 and that has already been
> integrated. This change will be available with the following EA build
> JDK-17+19.  For more technical info please see [1]
>
>
> *JEP 382 [2]**  - Starting with build 19, **JDK 17 for macOS is
> *temporarily* switched from using OpenGL**to using Apple's Metal
> API**for Java 2D rendering.*
>
> Heads up to anyone who is testing JDK 17 for running apps on macOS.
> Starting with build 19, JDK 17 for macOS is *temporarily* switched from
> using OpenGL to using Apple's Metal API for Java 2D rendering.
>
> If you are running any kind of 2D / Swing/ AWT UI application on macOS,
> and see any rendering related problems
> starting with JDK 17 b19, please do report them to us along with a test
> case and screen shots.
>
> You may also set "-Dsun.java2d.opengl=true" to re-enable OpenGL - which
> implicitly disables Metal - to confirm that it is a Metal related
> rendering glltch.
>
>
> Rgds,Rory
>
> [1]
>
> https://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2021-April/034745.html
> [2] https://openjdk.java.net/jeps/382
>
> --
> Rgds, Rory O'Donnell
> Quality Engineering Manager
> Oracle EMEA, Dublin, Ireland
>
>

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