Do not throttle upgrade of canaries

1 files changed, 8 insertions, 1 deletions

diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/Upgrader.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/Upgrader.java
index c89d74864cb..c20904710ea 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/Upgrader.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/Upgrader.java
@@ -102,7 +102,9 @@ public class Upgrader extends Maintainer {
         applications = applications.notFailingOn(version); // try to upgrade only if it hasn't failed on this version
         applications = applications.canUpgradeAt(controller().clock().instant()); // wait with applications that are currently blocking upgrades
         applications = applications.byIncreasingDeployedVersion(); // start with lowest versions
-        applications = applications.first(numberOfApplicationsToUpgrade()); // throttle upgrades
+        if (!containsOnlyCanaries(applications)) { // throttle upgrades of non-canaries
+            applications = applications.first(numberOfApplicationsToUpgrade());
+        }
         for (Application application : applications.asList())
             controller().applications().deploymentTrigger().triggerChange(application.id(), Change.of(version));
     }
@@ -171,4 +173,9 @@ public class Upgrader extends Maintainer {
         controller().removeConfidenceOverride(version::equals);
     }
 
+    /** Returns whether all given applications are canaries */
+    private static boolean containsOnlyCanaries(ApplicationList applications) {
+        return applications.asList().stream().allMatch(application -> application.deploymentSpec().upgradePolicy() == UpgradePolicy.canary);
+    }
+
 }