Fix waiting for last task in ViewManager close.

Prefer attempting to cancel task before execution before waiting.
Also removes double logging of execution exception, and avoids problem where get cannot be called after cancel.

core/src/main/java/com/orientechnologies/orient/core/db/viewmanager/ViewManager.java

@@ -178,18 +178,20 @@ public void close() {
     }
     if (lastTask != null) {
       try {
-        try {
+        // Try to cancel last task before it runs, otherwise wait for completion
+        if (!lastTask.cancel(false)) {
           lastTask.get(20, TimeUnit.SECONDS);
-        } catch (TimeoutException e) {
-          lastTask.cancel(true);
-          lastTask.get();
         }
-
+      } catch (TimeoutException e) {
+        OLogManager.instance()
+            .warn(
+                this,
+                "Timeout waiting for last task to complete view update background operations");
       } catch (InterruptedException e) {
         throw OException.wrapException(
             new OInterruptedException("Terminated while waiting update view to finis"), e);
       } catch (ExecutionException e) {
-        OLogManager.instance().warn(this, "Issue terminating view update background operations", e);
+        // Will already have been logged by thread pool executor
       }
     }