docs: private void adjustPoolSize(DbLoadContext context) {
          Pipeline pipeline = context.getPipeline();
          int newPoolSize = pipeline.getParameters().getLoadPoolSize();
          if (newPoolSize != poolSize) {
              poolSize = newPoolSize;
              if (executor instanceof ThreadPoolExecutor) {
                  ThreadPoolExecutor pool = (ThreadPoolExecutor) executor;
                  pool.setCorePoolSize(newPoolSize);
                  pool.setMaximumPoolSize(newPoolSize);
              }
          }
      }