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Updated the release notes with the notable changes in 0.39.0 release. [skip ci] Signed-off-by: Sreekala Gopakumar [email protected]
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| * Copyright (c) 2023 IBM Corp. and others | ||
| * | ||
| * This program and the accompanying materials are made | ||
| * available under the terms of the Eclipse Public License 2.0 | ||
| * which accompanies this distribution and is available at | ||
| * https://www.eclipse.org/legal/epl-2.0/ or the Apache | ||
| * License, Version 2.0 which accompanies this distribution and | ||
| * is available at https://www.apache.org/licenses/LICENSE-2.0. | ||
| * | ||
| * This Source Code may also be made available under the | ||
| * following Secondary Licenses when the conditions for such | ||
| * availability set forth in the Eclipse Public License, v. 2.0 | ||
| * are satisfied: GNU General Public License, version 2 with | ||
| * the GNU Classpath Exception [1] and GNU General Public | ||
| * License, version 2 with the OpenJDK Assembly Exception [2]. | ||
| * | ||
| * [1] https://www.gnu.org/software/classpath/license.html | ||
| * [2] https://openjdk.org/legal/assembly-exception.html | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0 | ||
| --> | ||
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| # Eclipse OpenJ9 version 0.39.0 release notes | ||
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| These release notes support the [Eclipse OpenJ9™ 0.39.0 release plan](https://projects.eclipse.org/projects/technology.openj9/releases/0.39.0/plan). | ||
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| ## Supported environments | ||
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| OpenJ9 release 0.39.0 supports OpenJDK 20. For a list of JDK Enhancement Proposals (JEP) that are supported by or implemented in OpenJ9, see the [release topic](https://eclipse.org/openj9/docs/version0.39/#new-jdk-20-features) in the user documentation. | ||
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| All releases are tested against the OpenJ9 functional verification (FV) test suite, the OpenJDK test suites, and additional tests provided by Adoptium. | ||
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| To learn more about support for OpenJ9 releases, including OpenJDK levels and platform support, see [Supported environments](https://eclipse.org/openj9/docs/openj9_support/index.html). | ||
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| ## Notable changes in this release | ||
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| The following table covers notable changes in v0.39.0. Further information about these changes can be found in the [user documentation](https://www.eclipse.org/openj9/docs/version0.39/). | ||
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| <table cellpadding="4" cellspacing="0" summary="" width="100%" rules="all" frame="border" border="1"><thead align="left"> | ||
| <tr> | ||
| <th valign="bottom">Issue number</th> | ||
| <th valign="bottom">Description</th> | ||
| <th valign="bottom">Version / Platform</th> | ||
| <th valign="bottom">Impact</th> | ||
| </tr> | ||
| </thead> | ||
| <tbody> | ||
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| <tr> | ||
| <td valign="top">N/A </td> | ||
| <td valign="top">RHEL 8.4 is out of support.</td> | ||
| <td valign="top">All versions (RHEL 8.4) </td> | ||
| <td valign="top">RHEL 8.6 is the new minimum operating system level.</td> | ||
| </tr> | ||
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| </tbody> | ||
| </table> | ||
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| ## Known issues | ||
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| The v0.39.0 release contains the following known issues and limitations: | ||
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| <table cellpadding="4" cellspacing="0" summary="" width="100%" rules="all" frame="border" border="1"> | ||
| <thead align="left"> | ||
| <tr> | ||
| <th valign="bottom">Issue number</th> | ||
| <th valign="bottom">Description</th> | ||
| <th valign="bottom">Platform</th> | ||
| <th valign="bottom">Impact</th> | ||
| <th valign="bottom">Workaround</th> | ||
| </tr> | ||
| </thead> | ||
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| <tbody> | ||
| <tr> | ||
| <td valign="top"><a href="https://github.com/eclipse-openj9/openj9/issues/15011">#15011</a></td> | ||
| <td valign="top">The default stack size is modified for the main thread.</td> | ||
| <td valign="top">All</td> | ||
| <td valign="top">The main thread stack size was 1 MB in releases prior to 0.32. In the 0.32 release and later it's modified to a smaller | ||
| platform-dependent value, the same value as the <tt>-Xmso</tt> setting. The 0.33 release increases the default <tt>-Xmso</tt> stack size | ||
| on x64 platforms, but builds with OpenJDK 17 and later also require more stack space to run. These changes might result in a | ||
| <tt>java.lang.StackOverflowError: operating system stack overflow</tt>.</td> | ||
| <td valign="top">Use <tt>-Xmso</tt> to set the default stack size. See the default value by using <tt>-verbose:sizes</tt>.</td> | ||
| </tr> | ||
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| <tr> | ||
| <td valign="top"><a href="https://github.com/eclipse-openj9/openj9/issues/13767">#13767</a></td> | ||
| <td valign="top">Compressed references mode is not available.</td> | ||
| <td valign="top">Apple silicon macOS</td> | ||
| <td valign="top">You can use only the large heap (non-compressed references) mode.</td> | ||
| <td valign="top">None</td> | ||
| </tr> | ||
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| <tr> | ||
| <td valign="top"><a href="https://github.com/eclipse-openj9/openj9/issues/14803">#14803</a></td> | ||
| <td valign="top">Using the <tt>-XX:+ShowHiddenFrames</tt> option in an OpenJ9 release that is built with OpenJDK 18 and later causes errors.</td> | ||
| <td valign="top">All platforms</td> | ||
| <td valign="top">Wrong exception might be thrown when using the Reflection API.</td> | ||
| <td valign="top">Avoid using the <tt>-XX:+ShowHiddenFrames</tt> option with OpenJDK 18 and later.</td> | ||
| </tr> | ||
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| </tbody> | ||
| </table> | ||
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| ## Other changes | ||
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| A full commit history for 0.39.0 release is available at [Eclipse OpenJ9 v0.39.0](https://github.com/eclipse-openj9/openj9/releases/tag/openj9-0.39.0). |