Make complex unique key for mem cache handler (#3897)

* make complex unique key for mem cache handler

* tmp

* add exception

* update doc

CHANGELOG.md

@@ -9,6 +9,7 @@ All notable changes to this project will be documented in this file.
 - Fix labels names in hierarchical config (<https://github.com/openvinotoolkit/training_extensions/pull/3879>)
 - Fix Learning Rate and Loss Handling in Tile Classifier MaskRCNN EfficientNet (<https://github.com/openvinotoolkit/training_extensions/pull/3873>)
 - Disable Tile Classifier in Rotated Detection (<https://github.com/openvinotoolkit/training_extensions/pull/3894>)
+- Enhance Memeory Cache Handler with Complex Unique Keys (<https://github.com/openvinotoolkit/training_extensions/pull/3897>)
 
 ## \[v1.6.4\]
 

README.md

@@ -102,6 +102,7 @@ You can find more details with examples in the [CLI command intro](https://openv
 
 - Fix labels names in hierarchical config
 - Fix Learning Rate and Loss Handling in Tile Classifier MaskRCNN EfficientNet
+- Enhance Memeory Cache Handler with Complex Unique Keys
 
 ### Release History
 

docs/source/guide/release_notes/index.rst

@@ -9,6 +9,7 @@ v1.6.5 (3Q24)
 
 - Fix labels names in hierarchical config
 - Fix Learning Rate and Loss Handling in Tile Classifier MaskRCNN EfficientNet
+- Enhance Memeory Cache Handler with Complex Unique Keys
 
 v1.6.4 (3Q24)
 -------------

src/otx/algorithms/common/adapters/mmcv/pipelines/load_image_from_otx_dataset.py

@@ -42,7 +42,12 @@ def _get_unique_key(results: Dict[str, Any]) -> Tuple:
         if "cache_key" in results:
             return results["cache_key"]
         d_item = results["dataset_item"]
-        results["cache_key"] = d_item.media.path, d_item.roi.id
+        if d_item.media.path:  # when video extracted frames come, media.path is None
+            results["cache_key"] = d_item.media.path, d_item.roi.id
+        elif len(d_item.annotation_scene.annotations) > 0:
+            results["cache_key"] = d_item.roi.id, d_item.annotation_scene.annotations[0].id
+        else:
+            results["cache_key"] = d_item.roi.id
         return results["cache_key"]
 
     def _get_memcache_handler(self):