fix test

Author: kaahos

.gitlab-ci.yml

@@ -312,7 +312,7 @@ dd-octo-sts-pre-release-check:
     when: always
 
 # Builds java-profiler from JAVA_PROFILER_REF and publishes custom-ddprof/ddprof.jar for downstream Gradle jobs.
-# Requires JDK 17+ for Gradle 9 and native toolchain for ddprof release (same base image as .gradle_build).
+# Requires JDK 21+ for java-profiler native release and JDK 17+ to run Gradle 9 (wrapper defaults to JVM on PATH, often JDK 8).
 build_java_profiler_ddprof:
   image: ${BUILDER_IMAGE_REPO}:${BUILDER_IMAGE_VERSION_PREFIX}base
   stage: build
@@ -325,6 +325,30 @@ build_java_profiler_ddprof:
     KUBERNETES_CPU_REQUEST: 10
     KUBERNETES_MEMORY_REQUEST: 20Gi
     KUBERNETES_MEMORY_LIMIT: 20Gi
+  before_script:
+    - |
+      # java-profiler uses Gradle 9.x; Gradle requires JVM 17+. Builder image default java is often JDK 8.
+      if [ -n "${JAVA_21_HOME:-}" ] && [ -x "${JAVA_21_HOME}/bin/java" ]; then
+        export JAVA_HOME="$JAVA_21_HOME"
+      elif [ -n "${JAVA_17_HOME:-}" ] && [ -x "${JAVA_17_HOME}/bin/java" ]; then
+        export JAVA_HOME="$JAVA_17_HOME"
+      else
+        shopt -s nullglob
+        for d in /usr/lib/jvm/java-21-* /usr/lib/jvm/temurin-21-* /usr/lib/jvm/java-17-*; do
+          if [ -x "${d}/bin/java" ]; then
+            export JAVA_HOME="$d"
+            break
+          fi
+        done
+        shopt -u nullglob
+      fi
+      if [ -z "${JAVA_HOME:-}" ] || ! [ -x "${JAVA_HOME}/bin/java" ]; then
+        echo "Could not find JDK 17+ for Gradle 9 (set JAVA_21_HOME or JAVA_17_HOME, or install JDK 21 under /usr/lib/jvm)." >&2
+        ls -la /usr/lib/jvm 2>/dev/null || true
+        exit 1
+      fi
+      export PATH="${JAVA_HOME}/bin:${PATH}"
+      java -version
   script:
     - |
       set -euo pipefail