pgpool 4.2.4 recovery_node

void
recovery_node(PGXCNodeHandle * handle, int node, int *conn_count)
{
  if (handle->state == DN_CONNECTION_STATE_QUERY)
  {
    /*
     * Finish query at the node before connecting to the next one,
     * otherwise we may not be able to reuse the connection to the same
     * node in a connection pool.
     */
    (void) handle->pgxc_node_receive(0, NULL);
    handle->clear_error();
  }
  handle->state = DN_CONNECTION_STATE_IDLE;
  /*
   * If there is a connection failure in the middle of transaction,
   * connection is dropped by the node and we do not need to send
   * ROLLBACK.
   *
   * Otherwise, in case some error occurs during transaction
   * we should rollback the transaction to keep the same state
   * on the remote node as the one we have locally.
   * It is also required as otherwise we may not be able to reuse the
   * connection in