Migrate Feature Vectors to a Different Neural Network Model

Tip

Do not hesitate to contact our experts on migration by support@ntechlab.com.

Important

In case, you are doing migration as part of the system update to a newer version, complete the update first. Only after that can you proceed to the migration.

This section is about how to migrate object feature vectors to another neural network model.

Do the following:

1. Create a backup of the Tarantool-based feature vector database in any directory of your choice, for example, /etc/ffmulti_dump.

   sudo docker exec -it findface-multi-findface-sf-api-1 bash -c "mkdir ffmulti_dump; cd ffmulti_dump && /storage-api-dump -config /etc/findface-sf-api.ini"
   sudo docker cp findface-multi-findface-sf-api-1:/ffmulti_dump /etc
   

2. Create new shards that will host regenerated feature vectors.

   1. Navigate to the /opt/findface-multi/data/findface-tarantool-server directory and find out the number of shards by counting the number of directories.

      Note

      There are eight shards in the example below.

      cd /opt/findface-multi/data/findface-tarantool-server
      
      ls -l
      
      shard-001
      shard-002
      shard-003
      shard-004
      shard-005
      shard-006
      shard-007
      shard-008
      

   2. Create directories that will host files of the new shards.

      sudo mkdir -p shard-01{1..8}/{index,snapshots,xlogs}
      

3. Open the /opt/findface-multi/configs/findface-extraction-api/findface-extraction-api.yaml configuration file and replace the extraction models with the new ones in the body_emben, car_emben, and face_emben parameters, depending on the object types you want to migrate.

   sudo vi /opt/findface-multi/configs/findface-extraction-api/findface-extraction-api.yaml
   
   extractors:
     ...
     models:
       ...
        body_emben: pedrec/<new_model_body>.cpu<gpu>.fnk
        ...
        car_emben: carrec/<new_model_car>.cpu<gpu>.fnk
        ...
        face_emben: face/<new_model_face>.cpu<gpu>.fnk
        ...
   

   Restart the findface-multi-findface-extraction-api-1 container.

   cd /opt/findface-multi/
   sudo docker-compose restart findface-extraction-api
   

4. In the docker-compose.yaml file, create a new service for each new shard. To do that, copy the existing service and replace the name of the shard, ports in CFG_LISTEN_PORT, TT_LISTEN and the path to the shard in volumes section.

   sudo vi docker-compose.yaml
   
   services:
     ...
     findface-tarantool-server-shard-**011**:
       depends_on: [findface-ntls]
       environment: {CFG_EXTRA_LUA: loadfile("/tnt_schema.lua")(), CFG_LISTEN_HOST: 127.0.0.1,
         CFG_LISTEN_PORT: '8111', CFG_NTLS: '127.0.0.1:3133', TT_CHECKPOINT_COUNT: 3,
         TT_CHECKPOINT_INTERVAL: '14400', TT_FORCE_RECOVERY: 'true', TT_LISTEN: '127.0.0.1:32011',
         TT_MEMTX_DIR: snapshots, TT_MEMTX_MEMORY: '2147483648', TT_WAL_DIR: xlogs, TT_WORK_DIR: /var/lib/tarantool/FindFace}
       image: docker.int.ntl/ntech/universe/tntapi:ffserver-9.230407.1
       logging: {driver: journald}
       network_mode: service:pause
       restart: always
       volumes: ['./data/findface-tarantool-server/shard-**011**:/var/lib/tarantool/FindFace',
         './configs/findface-tarantool-server/tnt-schema.lua:/tnt_schema.lua:ro']
   ...
   

5. Start the new shards by upping the containers.

   sudo docker-compose up -d
   

6. Create a configuration file with migration settings migration.yaml based on the example below.

   sudo vi migration.yaml
   
   extraction-api:
     timeouts:
       connect: 5s
       response_header: 30s
       overall: 35s
       idle_connection: 0s
     extraction-api: http://127.0.0.1:18666
   storage-api-from: # current location of the gallery
     timeouts:
       connect: 5s
       response_header: 30s
       overall: 35s
       idle_connection: 10s
     max-idle-conns-per-host: 20
     shards:
       - master: http://127.0.0.1:8101/v2/
         slave: ''
       - master: http://127.0.0.1:8102/v2/
         slave: ''
       - master: http://127.0.0.1:8103/v2/
         slave: ''
       - master: http://127.0.0.1:8104/v2/
         slave: ''
       - master: http://127.0.0.1:8105/v2/
         slave: ''
       - master: http://127.0.0.1:8106/v2/
         slave: ''
       - master: http://127.0.0.1:8107/v2/
         slave: ''
       - master: http://127.0.0.1:8108/v2/
         slave: ''
   storage-api-to:
     timeouts:
       connect: 5s
       response_header: 30s
       overall: 35s
       idle_connection: 10s
     max-idle-conns-per-host: 20
     shards:
       - master: http://127.0.0.1:8111/v2/
         slave: ''
       - master: http://127.0.0.1:8112/v2/
         slave: ''
       - master: http://127.0.0.1:8113/v2/
         slave: ''
       - master: http://127.0.0.1:8114/v2/
         slave: ''
       - master: http://127.0.0.1:8115/v2/
         slave: ''
       - master: http://127.0.0.1:8116/v2/
         slave: ''
       - master: http://127.0.0.1:8117/v2/
         slave: ''
       - master: http://127.0.0.1:8118/v2/
         slave: ''
   workers_num: 3
   objects_limit: 1000
   extraction_batch_size: 8
   normalized_storage:
     type: webdav
     enabled: True
     webdav:
       upload-url: http://127.0.0.1:3333/uploads/
     s3:
       endpoint: ''
       bucket-name: ''
       access-key: ''
       secret-access-key: ''
       secure: False
       region: ''
       public-url: ''
       operation-timeout: 30
   

   In the storage-api-from section, specify the old shards to migrate the data from.

   storage-api-from: # current location of the gallery
     ...
     shards:
       - master: http://127.0.0.1:8101/v2/
         slave: ''
       - master: http://127.0.0.1:8102/v2/
         slave: ''
       - master: http://127.0.0.1:8103/v2/
         slave: ''
       - master: http://127.0.0.1:8104/v2/
         slave: ''
       - master: http://127.0.0.1:8105/v2/
         slave: ''
       - master: http://127.0.0.1:8106/v2/
         slave: ''
       - master: http://127.0.0.1:8107/v2/
         slave: ''
       - master: http://127.0.0.1:8108/v2/
         slave: ''
       ...
   

   In the storage-api-to section, specify the new shards that will host migrated data.

   storage-api-to:
     ...
     shards:
       - master: http://127.0.0.1:8111/v2/
         slave: ''
       - master: http://127.0.0.1:8112/v2/
         slave: ''
       - master: http://127.0.0.1:8113/v2/
         slave: ''
       - master: http://127.0.0.1:8114/v2/
         slave: ''
       - master: http://127.0.0.1:8115/v2/
         slave: ''
       - master: http://127.0.0.1:8116/v2/
         slave: ''
       - master: http://127.0.0.1:8117/v2/
         slave: ''
       - master: http://127.0.0.1:8118/v2/
         slave: ''
       ...
   

7. Copy the migration.yaml file into the findface-multi-findface-sf-api-1 container. Launch the sf-api-migrate utility with the -config option and provide the migration.yaml configuration file.

   sudo docker cp migration.yaml findface-multi-findface-sf-api-1:/
   sudo docker exec findface-multi-findface-sf-api-1 ./sf-api-migrate -config migration.yaml
   

   Note

   The migration process can take up a significant amount of time if there are many events and records in the system.

8. Open the /opt/findface-multi/configs/findface-sf-api/findface-sf-api.yaml configuration file and adjust the shards ports, subject to the new shards settings. Restart the findface-multi-findface-sf-api-1 container.

   sudo vi /opt/findface-multi/configs/findface-sf-api/findface-sf-api.yaml
   
   storage-api:
     shards:
     - master: http://127.0.0.1:8111/v2/
       slave: ''
     - master: http://127.0.0.1:8112/v2/
       slave: ''
     - master: http://127.0.0.1:8113/v2/
       slave: ''
     - master: http://127.0.0.1:8114/v2/
       slave: ''
     - master: http://127.0.0.1:8115/v2/
       slave: ''
     - master: http://127.0.0.1:8116/v2/
       slave: ''
     - master: http://127.0.0.1:8117/v2/
       slave: ''
     - master: http://127.0.0.1:8118/v2/
       slave: ''
   
   sudo docker-compose restart findface-sf-api
   

9. After the migration is complete, remove services for the old shards from the docker-compose.yaml file and stop their containers.

   sudo docker-compose up -d --remove-orphans
   

10. Migrate clusters as well if this functionality is enabled in your system. To do so, execute the following command:

    Note

    List the object types to migrate as the command options: --face, --body, --car.

    sudo docker exec -it findface-multi-findface-multi-legacy-1 /opt/findface-security/bin/python3 /tigre_prototype/manage.py migrate_clusters --face --body --car --use-best-event --use-thumbnail --force-clustering
    

    As a result, the system will regenerate feature vectors for the existing cluster events and automatically launch the scheduled clustering to rebuild clusters.