fix: grpc reconnection fixed

exporters/otlp/otlpgrpc/connection.go

@@ -135,21 +135,23 @@ func (c *connection) indefiniteBackgroundConnection() {
 		// 1. If we've stopped, return entirely
 		// 2. Otherwise block until we are disconnected, and
 		//    then retry connecting
-		select {
-		case <-c.stopCh:
-			return
-
-		case <-c.disconnectedCh:
-			// Quickly check if we haven't stopped at the
-			// same time.
+		if c.connected() {
 			select {
 			case <-c.stopCh:
 				return
 
-			default:
-			}
+			case <-c.disconnectedCh:
+				// Quickly check if we haven't stopped at the
+				// same time.
+				select {
+				case <-c.stopCh:
+					return
+
+				default:
+				}
 
-			// Normal scenario that we'll wait for
+				// Normal scenario that we'll wait for
+			}
 		}
 
 		if err := c.connect(context.Background()); err == nil {