Triggering finalization does not guarantee that phantom references are enqueued

2 files changed, 2 insertions, 2 deletions

diff --git a/jdisc_core/src/main/java/com/yahoo/jdisc/core/ActiveContainerDeactivationWatchdog.java b/jdisc_core/src/main/java/com/yahoo/jdisc/core/ActiveContainerDeactivationWatchdog.java
index 588e5293066..69f33c833e1 100644
--- a/jdisc_core/src/main/java/com/yahoo/jdisc/core/ActiveContainerDeactivationWatchdog.java
+++ b/jdisc_core/src/main/java/com/yahoo/jdisc/core/ActiveContainerDeactivationWatchdog.java
@@ -126,7 +126,6 @@ class ActiveContainerDeactivationWatchdog implements ActiveContainerMetrics, Aut
     private static void triggerGc() {
         log.log(Level.FINE, "Triggering GC");
         System.gc();
-        System.runFinalization(); // this is required to trigger enqueuing of phantom references on some Linux systems
     }
 
     private void enforceDestructionOfGarbageCollectedContainers() {
diff --git a/jdisc_core/src/test/java/com/yahoo/jdisc/core/ActiveContainerDeactivationWatchdogTest.java b/jdisc_core/src/test/java/com/yahoo/jdisc/core/ActiveContainerDeactivationWatchdogTest.java
index dfb0272f5ea..a8bf7bd1d62 100644
--- a/jdisc_core/src/test/java/com/yahoo/jdisc/core/ActiveContainerDeactivationWatchdogTest.java
+++ b/jdisc_core/src/test/java/com/yahoo/jdisc/core/ActiveContainerDeactivationWatchdogTest.java
@@ -69,7 +69,8 @@ public class ActiveContainerDeactivationWatchdogTest {
     }
 
     @Test
-    @Ignore
+    @Ignore("Ignored as it assumes phantom references are enqueued right after first GC have cleared the weak reference. " +
+            "This is the case on most JVMs.")
     public void deactivated_container_destructed_if_its_reference_counter_is_nonzero() {
         ExecutorMock executor = new ExecutorMock();
         ActiveContainerDeactivationWatchdog watchdog =