--- a/NOTES	Thu Jan 18 10:04:43 2024 +0100
+++ b/NOTES	Mon Jan 22 09:58:53 2024 +0100
@@ -214,36 +214,14 @@
 
 TODO:
 - have a separate "thread" to UpdateStatistics ?
-- perf tests: upload generated data (different studies)
+
 - check https://discourse.orthanc-server.org/t/image-insert-are-too-slow-databse-performance-too-poor-when-using-mysql-mariadb/3820
-- implement a downgrade script ?  And test it in PotgresUpgrades integ tests
-- In Docker images, re-enable MySQL & ODBC plugins + tests
-
-- this error sometimes occur...
-======================================================================
-FAIL: test_upload_delete_same_study_from_multiple_threads (Concurrency.test_concurrency.TestConcurrency)
-----------------------------------------------------------------------
-    Traceback (most recent call last):
-    File "/home/runner/work/orthanc-builder/orthanc-builder/docker/integration-tests/orthanc-tests-repo-normal/NewTests/Concurrency/test_concurrency.py", line 254, in test_upload_delete_same_study_from_multiple_threads
-        self.assertEqual(0, len(self.o.studies.get_all_ids()))
-    AssertionError: 0 != 1
-
-    2023-12-21 17:10:04.737 UTC [69] ERROR:  deadlock detected
-    2023-12-21 17:10:04.737 UTC [69] DETAIL:  Process 69 waits for ShareLock on transaction 20657; blocked by process 70.
-        Process 70 waits for ShareLock on transaction 18193; blocked by process 69.
-        Process 69: SELECT * FROM DeleteResource($1)
-        Process 70: SELECT * FROM CreateInstance($1, $2, $3, $4)
-    2023-12-21 17:10:04.737 UTC [69] HINT:  See server log for query details.
-    2023-12-21 17:10:04.737 UTC [69] CONTEXT:  while deleting tuple (134,66) in relation "resources"
-        SQL statement "DELETE FROM ONLY "public"."resources" WHERE $1 OPERATOR(pg_catalog.=) "parentid""
-        SQL statement "DELETE FROM Resources WHERE internalId = old.parentId
-                                    AND NOT EXISTS (SELECT 1 FROM Resources WHERE parentId = old.parentId)"
-        PL/pgSQL function resourcedeletedfunc() line 7 at SQL statement
-        SQL statement "DELETE FROM Resources WHERE internalId=id RETURNING *"
-        PL/pgSQL function deleteresource(bigint) line 26 at SQL statement
-    2023-12-21 17:10:04.737 UTC [69] STATEMENT:  SELECT * FROM DeleteResource($1)
 
 DONE:
+- implement a downgrade script ?  And test it in PotgresUpgrades integ tests
+- test the transfer plugin
+- perf tests: upload generated data (different studies)
+- In Docker images, re-enable MySQL & ODBC plugins + tests
 - reenable PatientRecyclingOrder
 - force the create/update DB transaction to be serializable (not needed: this is handled by POSTGRESQL_LOCK_DATABASE_SETUP)
 - PatientAddedFunc contains an IF  (check if other IF/THEN/ELSE pattern remains)