update doc

Author: chenyushuo

docs/sphinx_doc/source/tutorial/trinity_configs.md

@@ -82,7 +82,7 @@ checkpoint_root_dir: ${oc.env:TRINITY_CHECKPOINT_ROOT_DIR,./checkpoints}   # TRI
   - `explore`: Only launches the explorer.
   - `bench`: Used for benchmarking.
 - `checkpoint_root_dir`: Root directory where all checkpoints and logs will be saved. Checkpoints for this experiment will be stored in `<checkpoint_root_dir>/<project>/<name>/`.
-- `continue_from_checkpoint`: If set to `true`, the experiment will continue from the latest checkpoint in the checkpoint path (if any); otherwise, it will rename the current experiment to `<name>_<timestamp>` and start a new experiment.
+- `continue_from_checkpoint`: If set to `true`, the experiment will continue from the latest checkpoint in the checkpoint path (if any); otherwise, it will rename the current experiment to `<name>_<timestamp>` and start a new experiment. Due to our decoupled design, during recovery from a checkpoint, we can only guarantee that the Trainer's model parameters and its optional auxiliary buffers (`auxiliary_buffers`) are restored to their latest checkpointed states, while the Explorer and Experience Buffer cannot be guaranteed to be restored to the same point in time.
 - `ray_namespace`: Namespace for the modules launched in the current experiment. If not specified, it will be set to `<project>/<name>`.
 
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docs/sphinx_doc/source_zh/tutorial/trinity_configs.md

@@ -82,7 +82,7 @@ checkpoint_root_dir: ${oc.env:TRINITY_CHECKPOINT_ROOT_DIR,./checkpoints}   # TRI
   - `explore`: 仅启动 explorer。
   - `bench`: 用于 benchmark 测试。
 - `checkpoint_root_dir`: 所有检查点和日志的根目录。该实验的检查点将存储在 `<checkpoint_root_dir>/<project>/<name>/` 路径下。
-- `continue_from_checkpoint`: 若设置为 `true`，实验将从检查点路径中的最新检查点继续；否则，会将当前实验重命名为 `<name>_<timestamp>` 并启动新实验。
+- `continue_from_checkpoint`: 若设置为 `true`，实验将从检查点路径中的最新检查点继续；否则，会将当前实验重命名为 `<name>_<timestamp>` 并启动新实验。由于我们的分离式设计，从检查点恢复的时候，我们只能保证Trainer的模型参数以及其使用的可选缓冲区（`auxiliary_buffers`）可以恢复到最新检查点的状态，而Explorer和Experience Buffer不能保证恢复到同一时点。
 - `ray_namespace`: 当前实验中启动模块的命名空间。若未指定，则默认为 `<project>/<name>`。
 
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