Regression: ThreadingTaskRunnerTest.testTaskLocationUsesAdvertisedPlaintextPort (test compile break) #20472

This issue was generated automatically by Claude Code (Anthropic's AI coding agent) running a scheduled CI-triage routine on behalf of @FrankChen021. Analysis and suggested fixes are AI-produced; please verify before acting on them.

Status: Resolved by #20470
Subject: ThreadingTaskRunnerTest.testTaskLocationUsesAdvertisedPlaintextPort (indexing-service, test compilation; every job that compiles indexing-service tests)
Failures: 39 · First seen: 2026-10-01 · Last seen: 2026-10-01

Root cause

#19598 (46e8f93) added an anonymous TaskRunnerListener in ThreadingTaskRunnerTest whose locationChanged/statusChanged take a String task ID. #20417 (merged 2026-09-28) had already changed the interface to pass a Task, and the #19598 branch was not rebased, so druid-indexing-service test compilation broke on master. Every Static Checks, CodeQL and Unit & Integration job on 46e8f93 and the following commit 87d36ea failed at compile time; this is not a flake.

Suggested fix

#20470 (merged 2026-10-01) changes both callbacks to take Task; the next master commit a24a74e is green on all three workflows. To prevent recurrences, require PR branches to be up to date with master (or re-run CI on merge) when a PR's last CI run is older than an interface change it touches.

Occurrences

Failed push-triggered master jobs only. The daily triage routine adds one row per new failed job.