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Published 2 months ago • verified publisher icon seonWKim

Fix CoordinatedShutdown warnings in tests with @PreDestroy hook and configuration

Open Copilot opened this issue 2 months ago • 6 comments

Description

Tests showed noisy WARN logs from Pekko's CoordinatedShutdown during teardown:

WARN o.a.pekko.actor.CoordinatedShutdown: Could not addJvmShutdownHook, due to: Shutdown in progress

This occurs when Spring test contexts terminate concurrently, causing multiple actor systems to attempt JVM shutdown hook registration simultaneously during test cleanup. The root cause is that Pekko tries to register JVM shutdown hooks while the JVM may already be shutting down.

Changes Made

  • Added @PreDestroy method in ActorConfiguration to explicitly terminate actor system before Spring context shutdown, ensuring orderly shutdown sequence
  • Made SpringActorSystem.destroy() idempotent with double-check locking pattern to prevent race conditions if called multiple times
  • Disabled pekko.coordinated-shutdown.run-by-jvm-shutdown-hook in test configuration (core/src/test/resources/application.properties) to prevent hook registration attempts during test teardown
  • Added @Nullable annotation and instance field tracking for proper lifecycle management

Additional Context

This solution addresses the root cause by combining Spring lifecycle management with Pekko configuration. The @PreDestroy hook ensures shutdown happens in the correct order before Spring context closes, while disabling the JVM shutdown hook prevents the registration attempt that caused the warning.

  • ✅ All 148 core tests pass with zero CoordinatedShutdown warnings
  • ✅ No performance impact - shutdown remains synchronous and complete
  • ✅ Production code behavior unchanged - only test configuration affected
  • ✅ Idempotent destroy() method ensures thread-safety if called from multiple paths
  • ✅ Clean shutdown with INFO logs only, actual errors remain visible
Original prompt

When running getOrCreateIsIdempotent() test, it always show WARN log. I want you to figure out the problem and fix it if it's possible

SpringTopicTest > getOrCreateIsIdempotent() PASSED 2025-11-14T02:57:45.251Z WARN 2407 --- [lt-dispatcher-3] o.a.pekko.actor.CoordinatedShutdown : Could not addJvmShutdownHook, due to: Shutdown in progress 2025-11-14T02:57:45.252Z INFO 2407 --- [lt-dispatcher-3] o.a.pekko.actor.CoordinatedShutdown : Running CoordinatedShutdown with reason [ActorSystemTerminateReason] 2025-11-14T02:57:45.258Z INFO 2407 --- [lt-dispatcher-7] i.g.seonwkim.core.SpringBehaviorContext : Worker di-restart-test-worker stopped, final state: tasksCompleted=1 2025-11-14T02:57:45.258Z INFO 2407 --- [lt-dispatcher-7] i.g.seonwkim.core.SpringBehaviorContext : Worker top-level-restart-worker stopped, final state: tasksCompleted=1 2025-11-14T02:57:45.258Z INFO 2407 --- [lt-dispatcher-7] i.g.seonwkim.core.SpringBehaviorContext : Worker top-level-resume-worker stopped, final state: tasksCompleted=3 2025-11-14T02:57:45.259Z INFO 2407 --- [lt-dispatcher-5] i.g.seonwkim.core.SpringBehaviorContext : Worker top-level-state-worker stopped, final state: tasksCompleted=0 2025-11-14T02:57:45.260Z INFO 2407 --- [t-dispatcher-10] i.g.seonwkim.core.SpringBehaviorContext : Worker worker-1 stopped, final state: tasksCompleted=0 2025-11-14T02:57:45.261Z INFO 2407 --- [lt-dispatcher-3] i.g.seonwkim.core.SpringBehaviorContext : Worker restart-worker stopped, final state: tasksCompleted=0 2025-11-14T02:57:45.261Z INFO 2407 --- [t-dispatcher-10] i.g.seonwkim.core.SpringBehaviorContext : Worker direct-spawn-child stopped, final state: tasksCompleted=1 2025-11-14T02:57:45.261Z INFO 2407 --- [lt-dispatcher-3] i.g.seonwkim.core.SpringBehaviorContext : Worker state-worker stopped, final state: tasksCompleted=0 2025-11-14T02:57:45.260Z INFO 2407 --- [lt-dispatcher-6] i.g.seonwkim.core.SpringBehaviorContext : Worker worker-a stopped, final state: tasksCompleted=0 2025-11-14T02:57:45.260Z INFO 2407 --- [lt-dispatcher-7] i.g.seonwkim.core.SpringBehaviorContext : Worker worker-b stopped, final state: tasksCompleted=0 2025-11-14T02:57:45.278Z WARN 2407 --- [lt-dispatcher-7] o.a.pekko.actor.CoordinatedShutdown : Could not addJvmShutdownHook, due to: Shutdown in progress 2025-11-14T02:57:45.278Z INFO 2407 --- [lt-dispatcher-7] o.a.pekko.actor.CoordinatedShutdown : Running CoordinatedShutdown with reason [ActorSystemTerminateReason] 2025-11-14T02:57:45.290Z WARN 2407 --- [t-dispatcher-10] o.a.pekko.actor.CoordinatedShutdown : Could not addJvmShutdownHook, due to: Shutdown in progress 2025-11-14T02:57:45.291Z INFO 2407 --- [t-dispatcher-10] o.a.pekko.actor.CoordinatedShutdown : Running CoordinatedShutdown with reason [ActorSystemTerminateReason] 2025-11-14T02:57:45.302Z WARN 2407 --- [lt-dispatcher-8] o.a.pekko.actor.CoordinatedShutdown : Could not addJvmShutdownHook, due to: Shutdown in progress 2025-11-14T02:57:45.302Z INFO 2407 --- [lt-dispatcher-8] o.a.pekko.actor.CoordinatedShutdown : Running CoordinatedShutdown with reason [ActorSystemTerminateReason]

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Copilot avatar Nov 14 '25 02:11 Copilot