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Maniphest T392465

Switch Gerrit from Java 17 to Java 21
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Description

Bookworm → Java 21 → Gerrit 3.11 → Gerrit 3.12

Gerrit 3.12 will drop support for Java 17 and require Java 21: https://www.gerritcodereview.com/3.12.html#java-21

As of April 23 2025, our servers run Bullseye with Java 17. They must be ugpraded to Bookworm first T392464 which would let us switch to Java 21 using component/jdk21.

Gerrit 3.11 supports Java 21 and even recommend it https://www.gerritcodereview.com/3.11.html.

The task to upgrade to Java 17 was T364342

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Event Timeline

hashar created this task.Apr 23 2025, 9:18 AM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptApr 23 2025, 9:18 AM
hashar updated the task description. (Show Details)Apr 23 2025, 9:25 AM
hashar added a parent task: T392448: Upgrade to Gerrit 3.12.
hashar added a subtask: T379714: Upgrade to Gerrit 3.11.
hashar added a subtask: T392464: Upgrade Gerrit hosts from Bullseye to Bookworm.
hashar removed a subtask: T379714: Upgrade to Gerrit 3.11.Apr 28 2025, 12:53 PM
hashar added a parent task: T379714: Upgrade to Gerrit 3.11.
hashar updated the task description. (Show Details)Aug 11 2025, 7:13 AM
hashar added a subscriber: MoritzMuehlenhoff.Feb 12 2026, 9:38 AM

I have talked with @MoritzMuehlenhoff about Java 21 on Bookworm via component/jdk21. That was originally just for idp.wikimedia.org and was not kept updated once idp moved to Trixie. Moritz will update it again for Gerrit purpose.

This also implies we will have to eventually reimage Gerrit servers to Trixie to get rid of the component/jdk21. We picked up Bookworm because at planning time last spring Trixie had not been released and I'd rather avoid jumping an OS version.

Stashbot added a comment.Feb 13 2026, 1:59 PM

Mentioned in SAL (#wikimedia-traffic) [2026-02-13T13:59:33Z] <moritzm> upload a backport of OpenJDK 21.0.10 to component/jdk21 for the Gerrit migration to Bookworm T392465

hashar mentioned this in T379714: Upgrade to Gerrit 3.11.Feb 21 2026, 4:23 PM
Paladox subscribed.Feb 21 2026, 4:54 PM
ABran-WMF closed subtask T392464: Upgrade Gerrit hosts from Bullseye to Bookworm as Resolved.Mar 5 2026, 3:21 PM
ABran-WMF added a subtask: Restricted Task.Mon, Mar 23, 1:24 PM
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