New JPMS enabled releases double the size of jar file

[norrisjeremy]

Guava Version

33.4.5-jre

Description

The size of the new JPMS enabled releases double the size of the jar file.
This appears to be due to the fact that every class is duplicated in the multi-release directory META-INF/versions/9, instead of just putting module-info.class in the multi-release directory META-INF/versions/9.

Example

$ du -hs guava-33.4.0-jre.jar
2.9M	guava-33.4.0-jre.jar

$ du -hs guava-33.4.5-jre.jar
5.9M	guava-33.4.5-jre.jar

Expected Behavior

JPMS enabled releases should only grow barely in size, due to the addition of a single new module-info.class.

Actual Behavior

JPMS enabled releases double the size of the jar file.

Packages

No response

Platforms

No response

Checklist

• I agree to follow the code of conduct.

• I can reproduce the bug with the latest version of Guava available.

[norrisjeremy]

Appears this is a known issue that will be remedied in 33.4.6.

[cpovirk]

Thanks, a new issue would have been a better way for me to handle this report.

[edit: Here was the earlier discussion.]

[norrisjeremy]

Yes apologies, I searched the issues (both open & closed) and didn't see it reported, so I opened this, not thinking to check the release notes.