DbTrackingModule - not synchronized well under pressure

[szygie]

Hello,
I found out that if I process more then one file (~10) at a time using As2DirectoryPollingModule updates made by DbTrackingModule get out of order for couple of records (like 1 or 2)

For example (please note ~40ms difference)

11:15:11.649 [Thread-1015] DEBUG org.openas2.processor.msgtracking.DbTrackingModule -- Tracking record successfully persisted to database: {state_msg=Message sent. Message MDN success response received., is_resend=N, receiver_id=TEST_PARTNER_B, file_name=fileNameToBeSend.txt, resend_count=0, mdn_response=Le message a ete envoye parTEST_PARTNER_A le Thu, 04 Apr 2026 13:15:11 CEST avec comme sujet ( File fileNameToBeSend.txt sent from TEST_PARTNER_A to TEST_PARTNER_B ) a ete recu. 
, sender_id=TEST_PARTNER_A, content_transfer_encoding=null, content_type=application/XML, sent_file_name=fileNameToBeSend.txt, mdn_id=<PROAS2-02042026131511-8488@TEST_PARTNER_B_TEST_PARTNER_A>, prior_msg_id=null, signature_algorithm=SHA1, mdn_mode=SYNC, encryption_algorithm=3DES, state=msg_sent_mdn_received_ok, msg_id=<OPENAS2-20260402111511+0000OPENAS2--427-TEST_PARTNER_A_TEST_PARTNER_B_fileNameToBeSend.txt>, compression=null, direction=SEND, status=verifying_mdn}


11:15:11.686 [Thread-1014] DEBUG org.openas2.processor.msgtracking.DbTrackingModule -- Tracking record successfully persisted to database: {state_msg=Message sending started, is_resend=N, receiver_id=TEST_PARTNER_B, file_name=fileNameToBeSend.txt, resend_count=0, sender_id=TEST_PARTNER_A, content_transfer_encoding=null, content_type=application/XML, sent_file_name=fileNameToBeSend.txt, prior_msg_id=null, signature_algorithm=SHA1, mdn_mode=SYNC, encryption_algorithm=3DES, state=msg_send_start, msg_id=<OPENAS2-20260402111511+0000OPENAS2--427-TEST_PARTNER_A_TEST_PARTNER_B_fileNameToBeSend.txt>, compression=null, direction=SEND, status=sending_msg}

Steps to reproduce:
place into /data/toAny/ ~10 files dedicated for one partner.

Observe results. 1 or 2 out of 10 would have Status = sending_msg, State=msg_send_start, MDN_RESPONSE= not null value(actual message from MDN), STATE_MSG = Message sending started.

Thanks in advance!