Don't run jobs in parallel

Running them in parallel is not required, and it is easier to
debug/trace issues later if jobs are executed sequentially.

1 files changed, 1 insertions, 1 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 c6355c93648..83388df3b09 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
@@ -53,7 +53,7 @@ class ActiveContainerDeactivationWatchdog implements ActiveContainerMetrics, Aut
     ActiveContainerDeactivationWatchdog() {
         this(
                 Clock.systemUTC(),
-                new ScheduledThreadPoolExecutor(3, runnable -> {
+                new ScheduledThreadPoolExecutor(1, runnable -> {
                     Thread thread = new Thread(runnable, "active-container-deactivation-watchdog");
                     thread.setDaemon(true);
                     return thread;