From d479a95ba0ea6f07ddc26fb3479a457d6c637360 Mon Sep 17 00:00:00 2001
From: Wei Lin <shps951002@gmail.com>
Date: Mon, 21 Sep 2026 13:19:27 +0800
Subject: [PATCH] ci(java): retry JDK 10 test suite once on transient fork
 startup crash

Zulu 10.0.2's forked test JVM intermittently crashes while starting on
ubuntu-22.04 runners (surefire reports "The forked VM terminated without
properly saying goodbye" with zero tests run). The failure reproduces on
neither a rerun nor any other matrix entry and happens before any test
class loads, so retry the suite once before failing the step.
---
 .github/workflows/java-ci.yml | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/java-ci.yml b/.github/workflows/java-ci.yml
index 7fa7a202..03d366a9 100644
--- a/.github/workflows/java-ci.yml
+++ b/.github/workflows/java-ci.yml
@@ -85,4 +85,24 @@ jobs:
 
       - name: Test on JDK 10
         if: matrix.java-version == '10'
-        run: ./mvnw -B -ntp -Djvm="$JAVA_HOME_10_X64/bin/java" verify
+        # Zulu 10.0.2's forked test JVM intermittently crashes while starting
+        # on ubuntu-22.04 runners ("The forked VM terminated without properly
+        # saying goodbye", Tests run: 0). The failure is non-deterministic and
+        # happens before any test class loads, so retry the suite once before
+        # reporting the step as failed.
+        run: |
+          set +e
+          status=0
+          for attempt in 1 2; do
+            echo "::group::JDK 10 verify attempt ${attempt}"
+            ./mvnw -B -ntp -Djvm="$JAVA_HOME_10_X64/bin/java" verify
+            status=$?
+            echo "::endgroup::"
+            if [ "${status}" -eq 0 ]; then
+              exit 0
+            fi
+            if [ "${attempt}" -eq 1 ]; then
+              echo "::warning::JDK 10 verify attempt 1 failed (exit ${status}); retrying."
+            fi
+          done
+          exit "${status}"