Noting #1411

Signed-off-by: NOleg Nenashev <o.v.nenashev@gmail.com>

changelog.html

@@ -65,6 +65,9 @@ Upcoming changes</a>
     Servlet containers may refuse to let us set <a href="https://www.owasp.org/index.php/SecureFlag">secure cookie flag</a>.
     Deal with it gracefully.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-25019">issue 25019</a>)
+  <li class=bug>
+    Existing <code>FileParameter</code>s should be handled as different values to avoid merging of queued builds
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-19017">issue 19017</a>)  
 </ul>
 </div><!--=TRUNK-END=-->
 

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

@@ -163,7 +163,7 @@ public class FileParameterValue extends ParameterValue {
 
 	/**
 	 * Compares file parameters (existing files will be considered as different).
-	 * Function has been modified in order to avoid <a href="https://issues.jenkins-ci.org/browse/JENKINS-19017">JENKINS-19017</a> issue (wrong merge of builds in the queue).
+	 * @since 1.586 Function has been modified in order to avoid <a href="https://issues.jenkins-ci.org/browse/JENKINS-19017">JENKINS-19017</a> issue (wrong merge of builds in the queue).
 	 */
 	@Override
 	public boolean equals(Object obj) {
@@ -178,7 +178,7 @@ public class FileParameterValue extends ParameterValue {
 		if (location == null && other.location == null) 
 			return true; // Consider null parameters as equal
 
-		//TODO: check fingerprints or checksums to improve the behavior
+		//TODO: check fingerprints or checksums to improve the behavior (JENKINS-25211)
 		// Return false even if files are equal
 		return false;
 	}