Filelist is reindexed after resolving multiposition files

model_server/clients/batch_runner.py

@@ -120,6 +120,8 @@ class FileBatchRunnerClient(HttpClient):
             df = pd.DataFrame(paths).head(min(max_count, len(paths)))
         else:
             df = pd.DataFrame(paths)
+        if len(df) == 0:
+            raise EmptyFileListError('No files were found')
         df['exists'] = df['path'].apply(lambda x: x.exists())
         df['parent'] = df['path'].apply(lambda x: x.parent)
         df['filename'] = df['path'].apply(lambda x: x.name)
@@ -144,7 +146,7 @@ class FileBatchRunnerClient(HttpClient):
             df_gb['position'] = df_gb['accessor_id'].apply(lambda x: range(0, len(x)))
             df_gb = df_gb.explode(['accessor_id', 'position'])
             accessor_ids.append(df_gb)
-        self.stacks = pd.concat(accessor_ids)
+        self.stacks = pd.concat(accessor_ids).reset_index()
         self.write_df()
 
     def queue_tasks(self):
@@ -207,6 +209,9 @@ class Error(Exception):
 class FileNotFoundError(Error):
     pass
 
+class EmptyFileListError(Error):
+    pass
+
 class WatchPathVerificationError(Error):
     pass