[FIXED JENKINS-39454] Do not consider pendings when deciding whether a...

[FIXED JENKINS-39454] Do not consider pendings when deciding whether a schedule result should be new or existing, as we have already taken a snapshot of actions. (#2609)

core/src/main/java/hudson/model/Executor.java

@@ -389,6 +389,9 @@ public class Executor extends Thread implements ModelObject {
                 }
 
                 if (executable instanceof Actionable) {
+                    if (LOGGER.isLoggable(Level.FINER)) {
+                        LOGGER.log(FINER, "when running {0} from {1} we are copying {2} actions whereas the item currently has {3}", new Object[] {executable, workUnit.context.item, workUnit.context.actions, workUnit.context.item.getAllActions()});
+                    }
                     for (Action action: workUnit.context.actions) {
                         ((Actionable) executable).addAction(action);
                     }

core/src/main/java/hudson/model/Queue.java

@@ -612,6 +612,9 @@ public class Queue extends ResourceController implements Saveable {
             for (Item item : duplicatesInQueue) {
                 for (FoldableAction a : Util.filter(actions, FoldableAction.class)) {
                     a.foldIntoExisting(item, p, actions);
+                    if (LOGGER.isLoggable(Level.FINE)) {
+                        LOGGER.log(Level.FINE, "after folding {0}, {1} includes {2}", new Object[] {a, item, item.getAllActions()});
+                    }
                 }
             }
 
@@ -1049,7 +1052,13 @@ public class Queue extends ResourceController implements Saveable {
             List<Item> result = new ArrayList<Item>();
             result.addAll(blockedProjects.getAll(t));
             result.addAll(buildables.getAll(t));
-            result.addAll(pendings.getAll(t));
+            // Do not include pendings—we have already finalized WorkUnitContext.actions.
+            if (LOGGER.isLoggable(Level.FINE)) {
+                List<BuildableItem> thePendings = pendings.getAll(t);
+                if (!thePendings.isEmpty()) {
+                    LOGGER.log(Level.FINE, "ignoring {0} during scheduleInternal", thePendings);
+                }
+            }
             for (Item item : waitingList) {
                 if (item.task.equals(t)) {
                     result.add(item);
@@ -1414,7 +1423,7 @@ public class Queue extends ResourceController implements Saveable {
                             p.task.getFullDisplayName());
                     p.isPending = false;
                     pendings.remove(p);
-                    makeBuildable(p);
+                    makeBuildable(p); // TODO whatever this is for, the return value is being ignored, so this does nothing at all
                 }
             }