Remove validation if LS is shutting down

headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/SimpleTextDocumentService.java

@@ -129,6 +129,12 @@ public class SimpleTextDocumentService implements TextDocumentService, DocumentE
 		this.appContext = appContext;
 		
 		this.messageWorkerThreadPool = Executors.newCachedThreadPool();
+		
+		server.onShutdown(() -> {
+			for (TextDocument d : getAll()) {
+				publishDiagnostics(d.getId(), Collections.emptyList());
+			}
+		});
 	}
 
 	/**

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/app/BootLanguageServerInitializer.java

@@ -179,6 +179,12 @@ public class BootLanguageServerInitializer implements InitializingBean {
 		server.getWorkspaceService().getFileObserver().onFilesCreated(FILES_TO_WATCH_GLOB, this::handleFiles);
 		
 		springIndexer.onUpdate(v -> reconcile());
+		
+		server.onShutdown(() -> {
+			for (IJavaProject p : projectFinder.all()) {
+				doNotValidateProject(p);
+			}
+		});
 	}
 	
 	private void reconcile() {