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CAUTION: This site hosts draft documentation for the next release. For published content of the latest release, visit www.eclipse.org/openj9/docs

What's new in version 0.48.0

The following new features and notable changes since version 0.47.0 are included in this release:

Features and changes

Binaries and supported environments

Eclipse OpenJ9™ release 0.48.0 supports OpenJDK 8, 11, 17, 21, and 23.

macOS 11 is out of support. macOS 11 and earlier versions are removed from the list of supported platforms.

To learn more about support for OpenJ9 releases, including OpenJDK levels and platform support, see Supported environments.

Loading of the zlibnx library on AIX is disabled by default

From release 0.25.0 onwards, zlibNX hardware-accelerated data compression and decompression was enabled by default on AIX®. From this release onwards, loading of the zlibnx library on AIX is disabled by default because using zlibNX might cause a ClassNotFoundException error. You can enable adding of the zlibNX library by using the -XX:+UseZlibNX option.

For more information, see -XX:[+|-]UseZlibNX.

Start of content that applies to Java 11 (LTS) and later JDWP support on Checkpoint/Restore In Userspace (CRIU) restore is enabled

You can use the options that enable the JDWP support both on CRIU pre-checkpoint, and on restore as well.

Also, a new parameter suspendOnRestore for the -Xrunjdwp option is added to control the suspension of the target VM application on restore. This option is specific to OpenJ9. You can use the suspendOnRestore=n setting to prevent the suspension of the target application.

For more information, see -Xrunjdwp. End of content that applies to Java 11 (LTS) and later

Known problems and full release information

To see known problems and a complete list of changes between Eclipse OpenJ9 v0.47.0 and v0.48.0 releases, see the Release notes.