ML Metadata v0.25.0

Release 0.25.0

Major Features and Improvements

• Supports MetadataStoreClientConfig options client_timeout_sec from the
  python client. The grpc APIs would return DeadlineExceededError when server
  does not respond within client_timeout_ms.

• From this release MLMD will also be hosting nightly packages on
  https://pypi-nightly.tensorflow.org. To install the nightly package use the
  following command:

  pip install -i https://pypi-nightly.tensorflow.org/simple ml-metadata
  

  Note: These nightly packages are unstable and breakages are likely to
  happen. The fix could often take a week or more depending on the complexity
  involved for the wheels to be available on the PyPI cloud service. You can
  always use the stable version of MLMD available on PyPI by running the
  command pip install ml-metadata .

• Upgrades MLMD schema version to 6.

  • Add ParentType table for supporting type inheritance.
  • Add Type.version column for Type evolution development.
  • Add Type.idx_type_name index for type lookup APIs.
  • Add Type.description column for capturing static information about
    Type.
  • Add ParentContext table for supporting context parental relationship.
  • Add Artifact.idx_artifact_uri for filtering artifacts by uri.
  • Add Event.idx_event_artifact_id and idx_event_execution_id for
    lineage traversal APIs.
  • Add indices on create_time_since_epoch, last_update_time_since_epoch
    for Artifact, Execution and Context for sorted listing queries.

• Allows omitting stored properties when using put_artifact_type,
  put_execution_type, put_context_type, to help writing forward
  compatibility MLMD type registration calls.

Bug Fixes and Other Changes

• Optimizes GetContext*/GetArtifact*/GetExecution* and corresponding List*
  calls to reduce number of backend queries.
• Documentation fixes for QueryExecutor methods.

Breaking Changes

• N/A

Deprecations

• Deprecates all_fields_match and can_delete_fields from python APIs
  put_artifact_type, put_execution_type, put_context_type. In previous
  releases these parameters can only be set with default values, otherwise
  Unimplemented error returns. This change should be no-op for all existing
  users.