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Changes to the OpenJ9 VM for release 0.21.0 Remove issues that are fixed for Aarch64. [ci skip] Signed-off-by: Sue Chaplain <sue_chaplain@uk.ibm.com>
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| * Copyright (c) 2020, 2020 IBM Corp. and others | ||
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| * available under the terms of the Eclipse Public License 2.0 | ||
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| * is available at https://www.apache.org/licenses/LICENSE-2.0. | ||
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| * This Source Code may also be made available under the | ||
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| # Eclipse OpenJ9 version 0.21.0 release notes | ||
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| These release notes support the [Eclipse OpenJ9 0.21.0 release plan](https://projects.eclipse.org/projects/technology.openj9/releases/0.21.0/plan). | ||
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| ## Binaries and supported environments | ||
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| OpenJ9 release 0.21.0 supports OpenJDK 8, 11, and 14. | ||
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| Binaries are available at the AdoptOpenJDK project: | ||
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| - [OpenJDK 8 with OpenJ9](https://adoptopenjdk.net/archive.html?variant=openjdk8&jvmVariant=openj9) | ||
| - [OpenJDK 11 with OpenJ9](https://adoptopenjdk.net/archive.html?variant=openjdk11&jvmVariant=openj9) | ||
| - [OpenJDK 14 with OpenJ9](https://adoptopenjdk.net/archive.html?variant=openjdk14&jvmVariant=openj9) | ||
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| All builds are tested against the OpenJ9 functional verification (FV) test suite, the OpenJDK test suites, and additional tests at AdoptOpenJDK. | ||
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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 v0.21.0. Further information about these changes can be found in the [user documentation](https://www.eclipse.org/openj9/docs/version0.21/). | ||
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| <table cellpadding="4" cellspacing="0" summary="" width="100%" rules="all" frame="border" border="1"><thead align="left"> | ||
| <tr valign="bottom"> | ||
| <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"><a href="https://github.com/eclipse/openj9/pull/9610">#9610</a></td> | ||
| <td valign="top">New option that affects the handling of the SIGABRT signal</td> | ||
| <td valign="top">OpenJDK8 and later</td> | ||
| <td valign="top">By default, the OpenJ9 VM handles SIGABRT signals and generates dump files. A new option is available to force OpenJ9 to match the | ||
| reference implementation, where the signal is handled by the default operating system handler. To match the reference implementation, set <tt>-XX:-HandleSIGABRT</tt>.</td> | ||
| </tr> | ||
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| <tr><td valign="top"><a href="https://github.com/eclipse/openj9/pull/9567">#9567</a></td> | ||
| <td valign="top">New option <tt>-XX:[+|-]PrintFlagsFinal</tt> for compatibility with the reference implementation</td> | ||
| <td valign="top">OpenJDK8 and later</td> | ||
| <td valign="top">This option provides output that lists configuration parameters for the OpenJ9 VM, such as the maximum heap size setting. The | ||
| implementation is currently incomplete and provides output on only a subset of configuration parameters.</td> | ||
| </tr> | ||
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| <tr><td valign="top"><a href="https://github.com/eclipse/openj9/pull/9676">#9676</a></td> | ||
| <td valign="top">macOS shared libraries version updated</td> | ||
| <td valign="top">OpenJDK8 and later (macOS® only)</td> | ||
| <td valign="top">The version information for shared libraries on macOS has been updated from 0.0.0 to 1.0.0. If an application has linked against a shared library from a previous OpenJ9 release, it needs to be re-linked against the new release.</td> | ||
| </tr> | ||
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| <tr><td valign="top"><a href="https://github.com/eclipse/openj9/pull/9588">#9588</a></td> | ||
| <td valign="top">Change to the output of the <tt>NoClassDefFoundError</tt> exception message to match the reference implementation</td> | ||
| <td valign="top">OpenJDK8 and later</td> | ||
| <td valign="top">The order in which class names are printed now matches the reference implementation.</td> | ||
| </tr> | ||
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| <tr><td valign="top"><a href="https://github.com/eclipse/openj9-docs/pull/583">#583</a></td> | ||
| <td valign="top">API reference documentation</td> | ||
| <td valign="top">OpenJDK8 and OpenJDK 11</td> | ||
| <td valign="top">API reference documentation for the OpenJ9 VM is now available in the <a href="https://www.eclipse.org/openj9/docs/api-overview/">user documentation</a>.</td> | ||
| </tr> | ||
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| <tr><td valign="top"><a href="https://github.com/eclipse/openj9/issues/8762">#8762</a> <a href="https://github.com/eclipse/openj9/issues/5917">#5917</a> <a href="https://github.com/eclipse/openj9/issues/6607">#6607</a> <a href="https://github.com/eclipse/openj9/issues/8966">#8966</a> <a href="https://github.com/eclipse/openj9/issues/9003">#9003</a> <a href="https://github.com/eclipse/openj9/issues/9251">#9251</a></td> | ||
| <td valign="top">Issue resolution</td> | ||
| <td valign="top">OpenJDK 11 (Linux on 64-bit ARM (AArch64))</td> | ||
| <td valign="top">The following issues that were recorded for this platform in earlier release notes are fixed: Concurrent Scavenge mode is supported, | ||
| JIT dynamic loop transfer and recompilation are supported, AOT is now used by default, and problems reading system dumps are now resolved.</td> | ||
| </tr> | ||
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| </table> | ||
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| ## Known Issues | ||
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| The v0.21.0 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 valign="bottom"> | ||
| <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> | ||
| <tbody> | ||
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| <tr><td valign="top"><a href="https://github.com/eclipse/openj9/issues/8034">#8034</a></td> | ||
| <td valign="top">Balanced garbage collection policy not supported</td> | ||
| <td valign="top">Linux on 64-bit ARM (AArch64)</td> | ||
| <td valign="top">The Balanced GC policy cannot be used. </td> | ||
| <td valign="top">Use an alternative GC policy, such as <tt>gencon</tt>.</td> | ||
| </tr> | ||
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| <tr><td valign="top"><a href="https://github.com/eclipse/openj9/issues/479">#479</a></td> | ||
| <td valign="top">Non-compressed references VM builds not available</td> | ||
| <td valign="top">AIX</td> | ||
| <td valign="top">Non-compressed references VM builds, which support heaps larger than 57GB, are built on Linux, Windows, and macOS. </td> | ||
| <td valign="top">Manual builds on other platforms are possible by following our <a href="https://github.com/eclipse/openj9/blob/master/buildenv/Build_Instructions_V8.md">detailed build instructions</a>.</td> | ||
| </tr> | ||
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| </tbody> | ||
| </table> | ||
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| ## Other changes | ||
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| A full commit history for this release is available at [Eclipse OpenJ9 v0.21.0](https://github.com/eclipse/openj9/releases/tag/openj9-0.21.0). |