Skip writing queue when unchanged

1 files changed, 1 insertions, 0 deletions

diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/NameServiceDispatcher.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/NameServiceDispatcher.java
index 8878ac9bd5b..d4dc068c71f 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/NameServiceDispatcher.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/NameServiceDispatcher.java
@@ -41,6 +41,7 @@ public class NameServiceDispatcher extends Maintainer {
         try (Lock lock = db.lockNameServiceQueue()) {
             NameServiceQueue queue = db.readNameServiceQueue();
             NameServiceQueue remaining = queue.dispatchTo(nameService, requestCount);
+            if (queue == remaining) return; // Queue unchanged
             db.writeNameServiceQueue(remaining);
         }
     }