[JENKINS-19622] Merged #989: allow background tasks to run simultaneously,...

[JENKINS-19622] Merged #989: allow background tasks to run simultaneously, preventing task blockage.

changelog.html

@@ -55,7 +55,9 @@ Upcoming changes</a>
 <!-- Record your changes in the trunk here. -->
 <div id="trunk" style="display:none"><!--=TRUNK-BEGIN=-->
 <ul class=image>
-  <li class=>
+  <li class=bug>
+    Allow background tasks to run simultaneously, preventing task blockage.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-19622">issue 19622</a>)
 </ul>
 </div><!--=TRUNK-END=-->
 

core/src/main/java/jenkins/util/Timer.java

@@ -13,7 +13,7 @@ import java.util.concurrent.atomic.AtomicInteger;
  * This ExecutorService will create additional threads to execute due (enabled) tasks.
  *
  * Provides a minimal abstraction for locating the ScheduledExecutorService so that we
- * can modify it's behavior going forward. For instance, to add managability/monitoring.
+ * can modify it's behavior going forward. For instance, to add manageability/monitoring.
  *
  * This is not an @Extension because it must be available before any extensions are loaded.
  *
@@ -22,7 +22,7 @@ import java.util.concurrent.atomic.AtomicInteger;
  *   {@link hudson.model.AsyncAperiodicWork}, {@link hudson.model.AsyncPeriodicWork}.
  *
  * @author Ryan Campbell
- * @since 1.538
+ * @since 1.541
  */
 public class Timer {