updates

Signed-off-by: Derek Riley <derek.riley@swirldslabs.com>

Author: derektriley

hedera-node/docs/design/app/blocks/BlockNodeConnectionManager.md

@@ -162,6 +162,11 @@ Used when retrying the same block node after transient issues:
 - **Reset**: Retry count resets if no retry occurs within `protocolExpBackoffTimeframeReset` duration
 - **Behavior**: Connection retries the same node without selecting a new one
 
+#### Forced Connection Switch Retry Delay
+
+When another block node should be selected and forced to become active, the previous active connection
+is closed and scheduled for retry after a fixed delay of 180s (`blockNode.forcedSwitchRescheduleDelay`).
+
 #### Retry State Management
 
 - `RetryState` tracks retry attempts and last retry time per node configuration

hedera-node/hedera-app/src/main/java/com/hedera/node/app/blocks/impl/streaming/BlockNodeConnectionManager.java

@@ -813,7 +813,7 @@ public void run() {
                                 logger.error(
                                         "Failed to schedule reschedule for previous active connection after forced switch.",
                                         e);
-                                connections.remove(connection.getNodeConfig());
+                                connections.remove(activeConnection.getNodeConfig());
                             }
                         }
                     } catch (final RuntimeException e) {
@@ -1101,7 +1101,7 @@ public BlockNodeStats.HighLatencyResult recordBlockAckAndCheckLatency(
      * This allows the manager to update its internal state accordingly.
      * @param connection the connection that has been closed
      */
-    public void notifyConnectionClosed(final BlockNodeConnection connection) {
+    public void notifyConnectionClosed(@NonNull final BlockNodeConnection connection) {
         // Remove from active connection if it is the current active
         activeConnectionRef.compareAndSet(connection, null);