Version 0.21.4

Major Features and Improvements

Bug fixes and other changes

• Fixed InfraValidator signal handling bug on BeamDagRunner.
• Dropped "Type" suffix from primitive type artifact names (Integer, Float,
  String, Bytes).

Deprecations

Breaking changes

For pipeline authors

For component authors

Documentation updates

Version 0.21.3

Version 0.21.3

Major Features and Improvements

• Added run/pipeline link when creating runs/pipelines on KFP through TFX CLI.
• Added support for ValueArtifact, whose attribute value allows users to
  access the content of the underlying file directly in the executor. Support
  Bytes/Integer/String/Float type. Note: interactive resolution does not
  support this for now.
• Added InfraValidator component that is used as an early warning layer
  before pushing a model into production.

Bug fixes and other changes

• Starting this version, TFX will only release python3 packages.
• Replaced relative import with absolute import in generated templates.
• Added a native keras model in the taxi template and the template now uses
  generic Trainer.
• Added support of TF 2.1 runtime configuration for AI Platform Prediction
  Pusher.
• Added support for using ML Metadata ArtifactType messages as Artifact
  classes.
• Changed CLI behavior to create new versions of pipelines instead of
  delete and create new ones when pipelines are updated for KFP. (Requires
  kfp >= 0.3.0)
• Added ability to enable quantization in tflite rewriter.
• Added k8s pod labels when the pipeline is executed via KubeflowDagRunner for
  better usage telemetry.
• Parameterized the GCP taxi pipeline sample for easily ramping up to full
  taxi dataset.
• Added support for hyphens(dash) in addition to underscores in CLI flags.
  Underscores will be supported as well.
• Fixed ill-formed underscore in the markdown visualization when running on
  KFP.

Deprecations

Breaking changes

For pipeline authors

For component authors

Documentation updates

Release 0.21.2

Version 0.21.2

Major Features and Improvements

• Updated StatisticsGen to optionally consume a schema Artifact.
• Added support for configuring the StatisticsGen component via serializable
  parts of StatsOptions.
• Added Keras guide doc.
• Changed Iris model_to_estimator e2e example to use generic Trainer.
• Demonstrated how TFLite is supported in TFX by extending MNIST example
  pipeline to also train a TFLite model.

Bug fixes and other changes

• Fix the behavior of Trainer Tensorboard visualization when caching is used.
• Added component documentation and guide on using TFLite in TFX.
• Relaxed the PyYaml dependency.

Deprecations

• Model Validator (its functionality is now provided by the Evaluator).

Breaking changes

For pipeline authors

For component authors

Documentation updates

Release 0.21.1

Version 0.21.1

Major Features and Improvements

• Pipelines compiled using KubeflowDagRunner now defaults to using the
  gRPC-based MLMD server deployed in Kubeflow Pipelines clusters when
  performing operations on pipeline metadata.
• Added tfx model rewriting and tflite rewriter.
• Added LatestBlessedModelResolver as an experimental feature which gets the
  latest model that was blessed by model validator.
• The specific Artifact subclass that was serialized (if defined in the
  deserializing environment) will be used when deserializing Artifacts and
  when reading Artifacts from ML Metadata (previously, objects of the
  generic tfx.types.artifact.Artifact class were created in some cases).
• Updated Evaluator's executor to support model validation.
• Introduced awareness of chief worker to Trainer's executor, in case running
  in distributed training cluster.
• Added a Chicago Taxi example with native Keras.
• Updated TFLite converter to work with TF2.
• Enabled filtering by artifact producer and output key in ResolverNode.

Bug fixes and other changes

• Added --skaffold_cmd flag when updating a pipeline for kubeflow in CLI.
• Changed python_version to 3.7 when using TF 1.15 and later for Cloud AI Platform Prediction.
• Added 'tfx_runner' label for CAIP, BQML and Dataflow jobs submitted from
  TFX components.
• Fixed the Taxi Colab notebook.
• Adopted the generic trainer executor when using CAIP Training.
• Depends on 'tensorflow-data-validation>=0.21.4,<0.22'.
• Depends on 'tensorflow-model-analysis>=0.21.4,<0.22'.
• Depends on 'tensorflow-transform>=0.21.2,<0.22'.

Deprecations

Breaking changes

• Remove "NOT_BLESSED" artifact.
• Change constants ARTIFACT_PROPERTY_BLESSED_MODEL_* to ARTIFACT_PROPERTY_BASELINE_MODEL_*.

For pipeline authors

For component authors

Documentation updates

Release 0.21.0

Version 0.21.0

Major Features and Improvements

• Pipelines compiled using KubeflowDagRunner now defaults to using the
  gRPC-based MLMD server deployed in Kubeflow Pipelines clusters when
  performing operations on pipeline metadata.
• Added tfx model rewriting and tflite rewriter.
• Added LatestBlessedModelResolver as an experimental feature which gets the
  latest model that was blessed by model validator.
• TFX version 0.21.0 will be the last version of TFX supporting Python 2.
• Added support for RuntimeParameters to allow users can specify templated
  values at runtime. This is currently only supported in Kubeflow Pipelines.
  Currently, only attributes in ComponentSpec.PARAMETERS and the URI of
  external artifacts can be parameterized (component inputs / outputs can
  not yet be parameterized). See
  tfx/examples/chicago_taxi_pipeline/taxi_pipeline_runtime_parameter.py
  for example usage.
• Users can access the parameterized pipeline root when defining the
  pipeline by using the pipeline.ROOT_PARAMETER placeholder in
  KubeflowDagRunner.
• Users can pass appropriately encoded Python dict objects to specify
  protobuf parameters in ComponentSpec.PARAMETERS; these will be decoded
  into the proper protobuf type. Users can avoid manually constructing complex
  nested protobuf messages in the component interface.
• Added support in Trainer for using other model artifacts. This enables
  scenarios such as warm-starting.
• Updated trainer executor to pass through custom config to the user module.
• Artifact type-specific properties can be defined through overriding the
  PROPERTIES dictionary of a types.artifact.Artifact subclass.
• Added new example of chicago_taxi_pipeline on Google Cloud Bigquery ML.
• Added support for multi-core processing in the Flink and Spark Chicago Taxi
  PortableRunner example.
• Added a metadata adapter in Kubeflow to support logging the Argo pod ID as
  an execution property.
• Added a prototype Tuner component and an end-to-end iris example.
• Created new generic trainer executor for non estimator based model, e.g.,
  native Keras.
• Updated to support passing tfma.EvalConfig in evaluator when calling TFMA.
• Users can create a pipeline using a new experimental CLI command,
  template.
• Added an iris example with native Keras.

Bug fixes and other changes

• Added --skaffold_cmd flag when updating a pipeline for kubeflow in CLI.
• Changed python_version to 3.7 when using TF 1.15 and later for Cloud AI Platform Prediction.
• Switched the default behavior of KubeflowDagRunner to not mounting GCP
  secret.
• Fixed "invalid spec: spec.arguments.parameters[6].name 'pipeline-root' is
  not unique" error when the user include pipeline.ROOT_PARAMETER and run
  pipeline on KFP.
• Added support for an hparams artifact as an input to Trainer in
  preparation for tuner support.
• Refactored common dependencies in the TFX dockerfile to a base image to
  improve the reliability of image building process.
• Fixes missing Tensorboard link in KubeflowDagRunner.
• Depends on apache-beam[gcp]>=2.17,<2.18
• Depends on ml-metadata>=0.21,<0.22.
• Depends on tensorflow-data-validation>=0.21,<0.22.
• Depends on tensorflow-model-analysis>=0.21,<0.22.
• Depends on tensorflow-transform>=0.21,<0.22.
• Depends on tfx-bsl>=0.21,<0.22.
• Depends on pyarrow>=0.14,<0.15.
• Removed tf.compat.v1 usage for iris and cifar10 examples.
• CSVExampleGen: started using the CSV decoding utilities in tfx-bsl
  (tfx-bsl>=0.15.2)
• Fixed problems with Airflow tutorial notebooks.
• Added performance improvements for the Transform Component (for statistics
  generation).
• Raised exceptions when container building fails.
• Enhanced custom slack component by adding a kubeflow example.
• Allowed windows style paths in Transform component cache.
• Fixed bug in CLI (--engine=kubeflow) which uses hard coded obsolete image
  (TFX 0.14.0) as the base image.
• Fixed bug in CLI (--engine=kubeflow) which could not handle skaffold
  response when an already built image is reused.
• Allowed users to specify the region to use when serving with AI Platform.
• Allowed users to give deterministic job id to AI Platform Training job.
• System-managed artifact properties ("name", "state", "pipeline_name" and
  "producer_component") are now stored as ML Metadata artifact custom
  properties.
• Fixed loading trainer and transformation functions from python module files
  without the .py extension.
• Fixed some ill-formed visualization when running on KFP.
• Removed system info from artifact properties and use channels to hold info
  for generating MLMD queries.
• Rely on MLMD context for inter-component artifact resolution and execution
  publishing.
• Added pipeline level context and component run level context.
• Included test data for examples/chicago_taxi_pipeline in package.
• Changed BaseComponentLauncher to require the user to pass in an ML
  Metadata connection object instead of a ML Metadata connection config.
• Capped version of Tensorflow runtime used in Google Cloud integration to
  1.15.
• Updated Chicago Taxi example dependencies to Beam 2.17.0, Flink 1.9.1, Spark
  2.4.4.
• Fixed an issue where build_ephemeral_package() used an incorrect path to
  locate the tfx directory.
• The ImporterNode now allows specification of general artifact properties.
• Added 'tfx_executor', 'tfx_version' and 'tfx_py_version' labels for CAIP,
  BQML and Dataflow jobs submitted from TFX components.

Deprecations

Breaking changes

For pipeline authors

• Standard artifact TYPE_NAME strings were reconciled to match their class
  names in types.standard_artifacts.
• The "split" property on multiple artifacts has been replaced with the
  JSON-encoded "split_names" property on a single grouped artifact.
• The execution caching mechanism was changed to rely on ML Metadata
  pipeline context. Existing cached executions will not be reused when running
  on this version of TFX for the first time.
• The "split" property on multiple artifacts has been replaced with the
  JSON-encoded "split_names" property on a single grouped artifact.

For component authors

• Artifact type name strings to the types.artifact.Artifact and
  types.channel.Channel classes are no longer supported; usage here should
  be replaced with references to the artifact subclasses defined in
  types.standard_artfacts.* or to custom subclasses of
  types.artifact.Artifact.

Documentation updates

Release 0.21.0rc0

Version 0.21.0rc0

Major Features and Improvements

• TFX version 0.21.0 will be the last version of TFX supporting Python 2.
• Added support for RuntimeParameters to allow users can specify templated
  values at runtime. This is currently only supported in Kubeflow Pipelines.
  Currently, only attributes in ComponentSpec.PARAMETERS and the URI of
  external artifacts can be parameterized (component inputs / outputs can
  not yet be parameterized). See
  tfx/examples/chicago_taxi_pipeline/taxi_pipeline_runtime_parameter.py
  for example usage.
• Users can access the parameterized pipeline root when defining the
  pipeline by using the pipeline.ROOT_PARAMETER placeholder in
  KubeflowDagRunner.
• Users can pass appropriately encoded Python dict objects to specify
  protobuf parameters in ComponentSpec.PARAMETERS; these will be decoded
  into the proper protobuf type. Users can avoid manually constructing complex
  nested protobuf messages in the component interface.
• Added support in Trainer for using other model artifacts. This enables
  scenarios such as warm-starting.
• Updated trainer executor to pass through custom config to the user module.
• Artifact type-specific properties can be defined through overriding the
  PROPERTIES dictionary of a types.artifact.Artifact subclass.
• Added new example of chicago_taxi_pipeline on Google Cloud Bigquery ML.
• Added support for multi-core processing in the Flink and Spark Chicago Taxi
  PortableRunner example.
• Added a metadata adapter in Kubeflow to support logging the Argo pod ID as
  an execution property.
• Added a prototype Tuner component and an end-to-end iris example.
• Created new generic trainer executor for non estimator based model, e.g.,
  native Keras.
• Updated to support passing tfma.EvalConfig in evaluator when calling TFMA.
• Users can create a pipeline using a new experimental CLI command,
  template.

Bug fixes and other changes

• Added support for an hparams artifact as an input to Trainer in
  preparation for tuner support.
• Refactored common dependencies in the TFX dockerfile to a base image to
  improve the reliability of image building process.
• Fixes missing Tensorboard link in KubeflowDagRunner.
• Depends on apache-beam[gcp]>=2.17,<3.
• Depends on ml-metadata>=0.21,<0.22.
• Depends on tensorflow-data-validation>=0.21,<0.22.
• Depends on tensorflow-model-analysis>=0.21,<0.22.
• Depends on tensorflow-transform>=0.21,<0.22.
• Depends on tfx-bsl>=0.21,<0.22.
• Depends on pyarrow>=0.14,<0.15.
• Removed tf.compat.v1 usage for iris and cifar10 examples.
• CSVExampleGen: started using the CSV decoding utilities in tfx-bsl
  (tfx-bsl>=0.15.2)
• Fixed problems with Airflow tutorial notebooks.
• Added performance improvements for the Transform Component (for statistics
  generation).
• Raised exceptions when container building fails.
• Enhanced custom slack component by adding a kubeflow example.
• Allowed windows style paths in Transform component cache.
• Fixed bug in CLI (--engine=kubeflow) which uses hard coded obsolete image
  (TFX 0.14.0) as the base image.
• Fixed bug in CLI (--engine=kubeflow) which could not handle skaffold
  response when an already built image is reused.
• Allowed users to specify the region to use when serving with AI Platform.
• Allowed users to give deterministic job id to AI Platform Training job.
• System-managed artifact properties ("name", "state", "pipeline_name" and
  "producer_component") are now stored as ML Metadata artifact custom
  properties.
• Fixed loading trainer and transformation functions from python module files
  without the .py extension.
• Fixed some ill-formed visualization when running on KFP.
• Removed system info from artifact properties and use channels to hold info
  for generating MLMD queries.
• Rely on MLMD context for inter-component artifact resolution and execution
  publishing.
• Added pipeline level context and component run level context.
• Included test data for examples/chicago_taxi_pipeline in package.
• Changed BaseComponentLauncher to require the user to pass in an ML
  Metadata connection object instead of a ML Metadata connection config.
• Capped version of Tensorflow runtime used in Google Cloud integration to
  1.15.
• Updated Chicago Taxi example dependencies to Beam 2.17.0, Flink 1.9.1, Spark
  2.4.4.
• Fixed an issue where build_ephemeral_package() used an incorrect path to
  locate the tfx directory.
• The ImporterNode now allows specification of general artifact properties.
• Added 'tfx_executor', 'tfx_version' and 'tfx_py_version' labels for CAIP,
  BQML and Dataflow jobs submitted from TFX components.

Deprecations

Breaking changes

For pipeline authors

• Standard artifact TYPE_NAME strings were reconciled to match their class
  names in types.standard_artifacts.
• The "split" property on multiple artifacts has been replaced with the
  JSON-encoded "split_names" property on a single grouped artifact.
• The execution caching mechanism was changed to rely on ML Metadata
  pipeline context. Existing cached executions will not be reused when running
  on this version of TFX for the first time.
• The "split" property on multiple artifacts has been replaced with the
  JSON-encoded "split_names" property on a single grouped artifact.

For component authors

• Artifact type name strings to the types.artifact.Artifact and
  types.channel.Channel classes are no longer supported; usage here should
  be replaced with references to the artifact subclasses defined in
  types.standard_artfacts.* or to custom subclasses of
  types.artifact.Artifact.

Documentation updates

Release 0.15.0

Version 0.15.0

Major Features and Improvements

• Offered unified CLI for tfx pipeline actions on various orchestrators
  including Apache Airflow, Apache Beam and Kubeflow.
• Polished experimental interactive notebook execution and visualizations so
  they are ready for use.
• Added BulkInferrer component to TFX pipeline, and corresponding offline
  inference taxi pipeline.
• Introduced ImporterNode as a special TFX node to register external resource
  into MLMD so that downstream nodes can use as input artifacts. An example
  taxi_pipeline_importer.py enabled by ImporterNode was added to showcase
  the user journey of user-provided schema (issue #571).
• Added experimental support for TFMA fairness indicator thresholds.
• Demonstrated DirectRunner multi-core processing in Chicago Taxi example,
  including Airflow and Beam.
• Introduced PipelineConfig and BaseComponentConfig to control the
  platform specific settings for pipelines and components.
• Added a custom Executor of Pusher to push model to BigQuery ML for serving.
• Added KubernetesComponentLauncher to support launch ExecutorContainerSpec in a
  Kubernetes cluster.
• Made model validator executor forward compatible with TFMA change.
• Added Iris flowers classification example.
• Added support for serialization and deserialization of components.
• Made component launcher extensible to support launching components on
  multiple platforms.
• Simplified component package names.
• Introduced BaseNode as the base class of any node in a TFX pipeline DAG.
• Added docker component launcher to launch container component.
• Added support for specifying pipeline root in runtime when run on
  KubeflowDagRunner. A default value can be provided when constructing the TFX
  pipeline.
• Added basic span support in ExampleGen to ingest file based data sources
  that can be updated regularly by upstream.
• Branched serving examples under chicago_taxi_pipeline/ from chicago_taxi/
  example.
• Supported beam arg 'direct_num_workers' for multi-processing on local.
• Improved naming of standard component inputs and outputs.
• Improved visualization functionality in the experimental TFX notebook
  interface.
• Allowed users to specify output file format when compiling TFX pipelines
  using KubeflowDagRunner.
• Introduced ResolverNode as a special TFX node to resolve input artifacts for
  downstream nodes. ResolverNode is a convenient way to wrap TFX Resolver, a
  logical unit for resolving input artifacts.
• Added cifar-10 example to demonstrate image classification.
• Added container builder feature in the CLI tool for container-based custom
  python components. This is specifically for the Kubeflow orchestration
  engine, which requires containers built with the custom python code.
• Demonstrated DirectRunner multi-core processing in Chicago Taxi example,
  including Airflow and Beam.
• Added Kubeflow artifact visualization of inputs, outputs and
  execution properties for components using a Markdown file. Added Tensorboard
  to Trainer components as well.

Bug fixes and other changes

• Bumped test dependency to kfp (Kubeflow Pipelines SDK) to be at version
  0.1.31.2.
• Fixed trainer executor to correctly make transform_output optional.
• Updated Chicago Taxi example dependency tensorflow to version >=1.14.0.
• Updated Chicago Taxi example dependencies tensorflow-data-validation,
  tensorflow-metadata, tensorflow-model-analysis, tensorflow-serving-api, and
  tensorflow-transform to version >=0.14.
• Updated Chicago Taxi example dependencies to Beam 2.14.0, Flink 1.8.1, Spark
  2.4.3.
• Adopted new recommended way to access component inputs/outputs as
  component.outputs['output_name'] (previously, the syntax was
  component.outputs.output_name).
• Updated Iris example to skip transform and use Keras model.
• Fixed the check for input artifact existence in base driver.
• Fixed bug in AI Platform Pusher that prevents pushes after first model, and
  not being marked as default.
• Replaced all usage of deprecated tensorflow.logging with absl.logging.
• Used special user agent for all HTTP requests through googleapiclient and
  apitools.
• Transform component updated to use tf.compat.v1 according to the TF 2.0
  upgrading procedure.
• TFX updated to use tf.compat.v1 according to the TF 2.0 upgrading
  procedure.
• Added Kubeflow local example pipeline that executes components in-cluster.
• Fixed a bug that prevents updating execution type.
• Fixed a bug in model validator driver that reads across pipeline boundaries
  when resolving latest blessed model.
• Depended on apache-beam[gcp]>=2.16,<3
• Depended on ml-metadata>=0.15,<0.16
• Depended on tensorflow>=1.15,<3
• Depended on tensorflow-data-validation>=0.15,<0.16
• Depended on tensorflow-model-analysis>=0.15.2,<0.16
• Depended on tensorflow-transform>=0.15,<0.16
• Depended on 'tfx_bsl>=0.15.1,<0.16'
• Made launcher return execution information, containing populated inputs,
  outputs, and execution id.
• Updated the default configuration for accessing MLMD from pipelines running
  in Kubeflow.
• Updated Airflow developer tutorial
• CSVExampleGen: started using the CSV decoding utilities in tfx-bsl
  (tfx-bsl>=0.15.2)
• Added documentation for Fairness Indicators.

Deprecations

• Deprecated component_type in favor of type.
• Deprecated component_id in favor of id.
• Move beam_pipeline_args out of additional_pipeline_args as top level
  pipeline param
• Deprecated chicago_taxi folder, beam setup scripts and serving examples are
  moved to chicago_taxi_pipeline folder.

Breaking changes

• Moved beam setup scripts from examples/chicago_taxi/ to
  examples/chicago_taxi_pipeline/
• Moved interactive notebook classes into tfx.orchestration.experimental
  namespace.
• Starting from 1.15, package tensorflow comes with GPU support. Users
  won't need to choose between tensorflow and tensorflow-gpu. If any GPU
  devices are available, processes spawned by all TFX components will try to
  utilize them; note that in rare cases, this may exhaust the memory of the
  device(s).
• Caveat: tensorflow 2.0.0 is an exception and does not have GPU
  support. If tensorflow-gpu 2.0.0 is installed before installing
  tfx, it will be replaced with tensorflow 2.0.0.
  Re-install tensorflow-gpu 2.0.0 if needed.
• Caveat: MLMD schema auto-upgrade is now disabled by default. For users who
  upgrades from 0.13 and do not want to lose the data in MLMD, please refer to
  MLMD documentation
  for guide to upgrade or downgrade MLMD database. Users who upgraded from TFX
  0.14 should not be affected since there is not schema change between these
  two versions.

For pipeline authors

• Deprecated the usage of tf.contrib.training.HParams in Trainer as it is
  deprecated in TF 2.0. User module relying on member method of that class
  will not be supported. Dot style property access will be the only supported
  style from now on.
• Any SavedModel produced by tf.Transform <=0.14 using any tf.contrib ops
  (or tf.Transform ops that used tf.contrib ops such as tft.quantiles,
  tft.bucketize, etc.) cannot be loaded with TF 2.0 since the contrib library
  has been removed in 2.0. Please refer to this [issue]
  (#838).

For component authors

Documentation updates

• Added conceptual info on Artifacts to guide/index.md

Release 0.15.0rc0

Version 0.15.0rc0

Major Features and Improvements

• Offered unified CLI for tfx pipeline actions on various orchestrators
  including Apache Airflow, Apache Beam and Kubeflow.
• Polished experimental interactive notebook execution and visualizations
  so they are ready for use.
• Added BulkInferrer component to TFX pipeline, and corresponding offline
  inference taxi pipeline.
• Introduced ImporterNode as a special TFX node to register external resource
  into MLMD so that downstream nodes can use as input artifacts. An example
  taxi_pipeline_importer.py enabled by ImporterNode was added to showcase
  the user journey of user-provided schema (issue #571).
• Added experimental support for TFMA fairness indicator thresholds.
• Demonstrated DirectRunner multi-core processing in Chicago Taxi example,
  including Airflow and Beam.
• Made model validator executor forward compatible with TFMA change.
• Added Iris flowers classification example.
• Added support for serialization and deserialization of components.
• Made component launcher extensible to support launching components on
  multiple platforms.
• Added option to use fixed Schema artifact for ExampleValidator, Transform
  and Trainer.
• Simplified component package names.
• Introduced BaseNode as the base class of any node in a TFX pipeline DAG.
• Added docker component launcher to launch container component.
• Added support for specifying pipeline root in runtime when run on KubeflowDagRunner.
  A default value can be provided when constructing the TFX pipeline.
• Added basic span support in ExampleGen to ingest file based data sources
  that can be updated regularly by upstream.
• Branched serving examples under chicago_taxi_pipeline/ from
  chicago_taxi/ example.
• Supported beam arg 'direct_num_workers' for multi-processing on local.
• Improved naming of standard component inputs and outputs.
• Improved visualization functionality in the experimental TFX notebook
  interface.
• Allowed users to specify output file format when compiling TFX pipelines
  using KubeflowDagRunner.
• Introduced ResolverNode as a special TFX node to resolve input artifacts for
  downstream nodes. ResolverNode is a convenient way to wrap TFX Resolver, a
  logical unit for resolving input artifacts.
• Added cifar-10 example to demonstrate image classification.
• Added container builder feature in the CLI tool for container-based custom
  python components. This is specifically for the Kubeflow orchestration
  engine, which requires containers built with the custom python code.
• Demonstrated DirectRunner multi-core processing in Chicago Taxi example,
  including Airflow and Beam.

Bug fixes and other changes

• Bumped test dependency to kfp (Kubeflow Pipelines SDK) to
  be at version 0.1.31.2.
• Fixed trainer executor to correctly make transform_output optional.
• Updated Chicago Taxi example dependency tensorflow to version >=1.14.0.
• Updated Chicago Taxi example dependencies tensorflow-data-validation,
  tensorflow-metadata, tensorflow-model-analysis, tensorflow-serving-api, and
  tensorflow-transform to version >=0.14.
• Updated Chicago Taxi example dependencies to Beam 2.14.0, Flink 1.8.1, Spark
  2.4.3.
• Adopted new recommended way to access component inputs/outputs as
  component.outputs['output_name'] (previously, the syntax was
  component.outputs.output_name).
• Updated Iris example to skip transform and use Keras model.
• Fixed the check for input artifact existence in base driver.
• Fixed bug in AI Platform Pusher that prevents pushes after first model,
  and not being marked as default.
• Replaced all usage of deprecated tensorflow.logging with absl.logging.
• Used special user agent for all HTTP requests through
  googleapiclient and apitools.
• Transform component updated to use tf.compat.v1 according to the TF 2.0
  upgrading procedure.
• TFX updated to use tf.compat.v1 according to the TF 2.0 upgrading
  procedure.
• Added Kubeflow simple example that executes all components in-cluster.
• Fixed a bug that prevents updating execution type.
• Depended on apache-beam[gcp]>=2.16,<3
• Depended on ml-metadata>=0.15,<0.16
• Depended on tensorflow>=1.15,<3
• Depended on tensorflow-data-validation>=0.15,<0.16
• Depended on tensorflow-model-analysis>=0.15.2,<0.16
• Depended on tensorflow-transform>=0.15,<0.16
• Depended on 'tfx_bsl>=0.15.1,<0.16'

Deprecations

• Deprecated component_type in favor of type.
• Deprecated component_id in favor of id.
• Move beam_pipeline_args out of additional_pipeline_args as top level
  pipeline param
• Deprecated chicago_taxi folder, beam setup scripts and serving examples are
  moved to chicago_taxi_pipeline folder.

Breaking changes

• Moved beam setup scripts from examples/chicago_taxi/ to
  examples/chicago_taxi_pipeline/
• Moved interactive notebook classes into tfx.orchestration.experimental
  namespace.

For pipeline authors

• Deprecated the usage of tf.contrib.training.HParams in Trainer as it is
  deprecated in TF 2.0. User module relying on member method of that class
  will not be supported. Dot style property access will be the only supported
  style from now on.

For component authors

Documentation updates

• Added conceptual info on Artifacts to guide/index.md

Release 0.14.0

Major Features and Improvements

• Added support for Google Cloud ML Engine Training and Serving as extension.
• Supported pre-split input for ExampleGen components
• Added ImportExampleGen component for importing tfrecord files with TF
  Example data format
• Added a generic ExampleGen component to reduce the work of custom ExampleGen
• Released Python 3 type hints and added support for Python 3.6 and 3.7.
• Added an Airflow integration test for chicago_taxi_simple example.
• Updated tfx docker image to use Python 3.6 on Ubuntu 16.04.
• Added example for how to define and add a custom component.
• Added PrestoExampleGen component.
• Added Parquet executor for ExampleGen component.
• Added Avro executor for ExampleGen component.
• Enables Kubeflow Pipelines users to specify arbitrary ContainerOp decorators
  that can be applied to each pipeline step.
• Added scripts and instructions for running the TFX Chicago Taxi example on
  Spark (via Apache Beam).
• Introduced a new mechanism of artifact info passing between components that
  relies solely on ML Metadata.
• Unified driver and execution logging to go through tf.logging.
• Added support for Beam as an orchestrator.
• Introduced the experimental InteractiveContext environment for iterative
  notebook development, as well as an example Chicago Taxi notebook in this
  environment with TFDV / TFMA examples.
• Enabled Transform and Trainer components to specify user defined function
  (UDF) module by Python module path in addition to path to a module file.
• Enable ImportExampleGen component for Kubeflow.
• Enabled SchemaGen to infer feature shape.
• Enabled metadata logging and pipeline caching capability for KubeflowRunner.
• Used custom container for AI Platform Trainer extension.
• Introduced ExecutorSpec, which generalizes the representation of executors
  to include both Python classes and containers.
• Supported run context for metadata tracking of tfx pipeline.

Deprecations

• Deprecated 'metadata_db_root' in favor of passing in
  metadata_connection_config directly.
• airflow_runner.AirflowDAGRunner is renamed to
  airflow_dag_runner.AirflowDagRunner.
• runner.KubeflowRunner is renamed to kubeflow_dag_runner.KubeflowDagRunner.
• The "input" and "output" exec_properties fields for ExampleGen executors
  have been renamed to "input_config" and "output_config", respectively.
• Declared 'cmle_training_args' on trainer and 'cmle_serving_args' on pusher
  deprecated. User should use the trainer/pusher executors in
  tfx.extensions.google_cloud_ai_platform module instead.
• Moved tfx.orchestration.gcp.cmle_runner to
  tfx.extensions.google_cloud_ai_platform.runner.

Bug fixes and other changes

• Updated components and code samples to use tft.TFTransformOutput (
  introduced in tensorflow_transform 0.8). This avoids directly accessing the
  DatasetSchema object which may be removed in tensorflow_transform 0.14 or
  0.15.
• Fixed issue #113 to have consistent type of train_files and eval_files
  passed to trainer user module.
• Fixed issue #185 preventing the Airflow UI from visualizing the component's
  subdag operators and logs.
• Fixed issue #201 to make GCP credentials optional.
• Bumped dependency to kfp (Kubeflow Pipelines SDK) to be at version at least
  0.1.18.
• Updated code example to
  • use 'tf.data.TFRecordDataset' instead of the deprecated function
    'tf.TFRecordReader'
  • add test to train, evaluate and export.
• Component definition streamlined with explicit ComponentSpec and new style
  for defining component classes.
• TFX now depends on pyarrow>=0.14.0,<0.15.0 (through its dependency on
  tensorflow-data-validation).
• Introduced 'examples' to the Trainer component API. It's recommended to use
  this field instead of 'transformed_examples' going forward.
• Trainer can now run without the 'transform_output' input.
• Added check for duplicated component ids within a pipeline.
• String representations for Channel and Artifact (TfxType) classes were
  improved.
• Updated workshop/setup/setup_demo.sh to fix version incompatibilities
• Updated workshop by adding note and instructions to fix issue with GCC
  version when starting airflow webserver.
• Prepared support for analyzer cache optimization in transform executor.
• Fixed issue #463 correcting syntax in SCHEMA_EMPTY message.
• Added an explicit check that pipeline name cannot exceed 63 characters.
• SchemaGen takes a new argument, infer_feature_shape to indicate whether to
  infer shape of features in schema. Current default value is False, but we
  plan to remove default value for it in future.
• Depended on 'click>=7.0,<8'
• Depended on apache-beam[gcp]>=2.14,<3
• Depended on ml-metadata>=-1.14.0,<0.15
• Depended on tensorflow-data-validation>=0.14.1,<0.15
• Depended on tensorflow-model-analysis>=0.14.0,<0.15
• Depended on tensorflow-transform>=0.14.0,<0.15

Breaking changes

For pipeline authors

• The "outputs" argument, which is used to override the automatically-
  generated output Channels for each component class has been removed; the
  equivalent overriding functionality is now available by specifying optional
  keyword arguments (see each component class definition for details).
• The optional arguments "executor" and "unique_name" of component classes
  have been uniformly renamed to "executor_spec" and "instance_name",
  respectively.
• The "driver" optional argument of component classes is no longer available:
  users who need to override the driver for a component should subclass the
  component and override the DRIVER_CLASS field.
• The example_gen.component.ExampleGen class has been refactored into the
  example_gen.component._QueryBasedExampleGen and
  example_gen.component.FileBasedExampleGen classes.
• pipeline_root passed to pipeline.Pipeline is now the root to the running
  pipeline instead of root of all pipelines.

For component authors

• Component class definitions have been simplified; existing custom components
  need to:
  • specify a ComponentSpec contract and conform to new class definition
    style (see base_component.BaseComponent)
  • specify EXECUTOR_SPEC=ExecutorClassSpec(MyExecutor) in the component
    definition to replace executor=MyExecutor from component constructor.
• Artifact definitions for standard TFX components have moved from using
  string type names into being concrete Artifact classes (see each official
  TFX component's ComponentSpec definition in types.standard_component_specs
  and the definition of built-in Artifact types in
  types.standard_artifacts).
• The base_component.ComponentOutputs class has been renamed to
  base_component._PropertyDictWrapper.
• The tfx.utils.types.TfxType class has been renamed to tfx.types.Artifact.
• The tfx.utils.channel.Channel class has been moved to tfx.types.Channel.
• The "static_artifact_collection" argument to types.Channel has been renamed
  to "artifacts".
• ArtifactType for artifacts will have two new properties: pipeline_name and
  producer_component.
• The ARTIFACT_STATE_* constants were consolidated into the
  types.artifacts.ArtifactState enum class.

Version 0.14.0rc1

Major Features and Improvements

• Added support for Google Cloud ML Engine Training and Serving as extension.
• Supported pre-split input for ExampleGen components
• Added ImportExampleGen component for importing tfrecord files with TF
  Example data format
• Added a generic ExampleGen component to reduce the work of custom ExampleGen
• Released Python 3 type hints and added support for Python 3.6 and 3.7.
• Added an Airflow integration test for chicago_taxi_simple example.
• Updated tfx docker image to use Python 3.6 on Ubuntu 16.04.
• Added example for how to define and add a custom component.
• Added PrestoExampleGen component.
• Added Parquet executor for ExampleGen component.
• Added Avro executor for ExampleGen component.
• Enables Kubeflow Pipelines users to specify arbitrary ContainerOp decorators
  that can be applied to each pipeline step.
• Added scripts and instructions for running the TFX Chicago Taxi example on
  Spark (via Apache Beam).
• Introduced a new mechanism of artifact info passing between components that
  relies solely on ML Metadata.
• Unified driver and execution logging to go through tf.logging.
• Added support for Beam as an orchestrator.
• Introduced the experimental InteractiveContext environment for iterative
  notebook development, as well as an example Chicago Taxi notebook in this
  environment with TFDV / TFMA examples.
• Enabled Transform and Trainer components to specify user defined function
  (UDF) module by Python module path in addition to path to a module file.
• Enable ImportExampleGen component for Kubeflow.
• Enabled SchemaGen to infer feature shape.
• Enabled metadata logging and pipeline caching capability for KubeflowRunner.
• Used custom container for AI Platform Trainer extension.
• Introduced ExecutorSpec, which generalizes the representation of executors
  to include both Python classes and containers.
• Supported run context for metadata tracking of tfx pipeline.

Deprecations

• Deprecated 'metadata_db_root' in favor of passing in
  metadata_connection_config directly.
• airflow_runner.AirflowDAGRunner is renamed to
  airflow_dag_runner.AirflowDagRunner.
• runner.KubeflowRunner is renamed to kubeflow_dag_runner.KubeflowDagRunner.
• The "input" and "output" exec_properties fields for ExampleGen executors
  have been renamed to "input_config" and "output_config", respectively.
• Declared 'cmle_training_args' on trainer and 'cmle_serving_args' on pusher
  deprecated. User should use the trainer/pusher executors in
  tfx.extensions.google_cloud_ai_platform module instead.
• Moved tfx.orchestration.gcp.cmle_runner to
  tfx.extensions.google_cloud_ai_platform.runner.

Bug fixes and other changes

• Updated components and code samples to use tft.TFTransformOutput (
  introduced in tensorflow_transform 0.8). This avoids directly accessing the
  DatasetSchema object which may be removed in tensorflow_transform 0.14 or
  0.15.
• Fixed issue #113 to have consistent type of train_files and eval_files
  passed to trainer user module.
• Fixed issue #185 preventing the Airflow UI from visualizing the component's
  subdag operators and logs.
• Fixed issue #201 to make GCP credentials optional.
• Bumped dependency to kfp (Kubeflow Pipelines SDK) to be at version at least
  0.1.18.
• Updated code example to
  • use 'tf.data.TFRecordDataset' instead of the deprecated function
    'tf.TFRecordReader'
  • add test to train, evaluate and export.
• Component definition streamlined with explicit ComponentSpec and new style
  for defining component classes.
• TFX now depends on pyarrow>=0.14.0,<0.15.0 (through its dependency on
  tensorflow-data-validation).
• Introduced 'examples' to the Trainer component API. It's recommended to use
  this field instead of 'transformed_examples' going forward.
• Trainer can now run without the 'transform_output' input.
• Added check for duplicated component ids within a pipeline.
• String representations for Channel and Artifact (TfxType) classes were
  improved.
• Updated workshop/setup/setup_demo.sh to fix version incompatibilities
• Updated workshop by adding note and instructions to fix issue with GCC
  version when starting airflow webserver.
• Prepared support for analyzer cache optimization in transform executor.
• Fixed issue #463 correcting syntax in SCHEMA_EMPTY message.
• Added an explicit check that pipeline name cannot exceed 63 characters.
• SchemaGen takes a new argument, infer_feature_shape to indicate whether to
  infer shape of features in schema. Current default value is False, but we
  plan to remove default value for it in future.
• Depended on 'click>=7.0,<8'
• Depended on apache-beam[gcp]>=2.14,<3
• Depended on ml-metadata>=-1.14.0,<0.15
• Depended on tensorflow-data-validation>=0.14.1,<0.15
• Depended on tensorflow-model-analysis>=0.14.0,<0.15
• Depended on tensorflow-transform>=0.14.0,<0.15

Breaking changes

For pipeline authors

• The "outputs" argument, which is used to override the automatically-
  generated output Channels for each component class has been removed; the
  equivalent overriding functionality is now available by specifying optional
  keyword arguments (see each component class definition for details).
• The optional arguments "executor" and "unique_name" of component classes
  have been uniformly renamed to "executor_spec" and "instance_name",
  respectively.
• The "driver" optional argument of component classes is no longer available:
  users who need to override the driver for a component should subclass the
  component and override the DRIVER_CLASS field.
• The example_gen.component.ExampleGen class has been refactored into the
  example_gen.component._QueryBasedExampleGen and
  example_gen.component.FileBasedExampleGen classes.
• pipeline_root passed to pipeline.Pipeline is now the root to the running
  pipeline instead of root of all pipelines.

For component authors

• Component class definitions have been simplified; existing custom components
  need to:
  • specify a ComponentSpec contract and conform to new class definition
    style (see base_component.BaseComponent)
  • specify EXECUTOR_SPEC=ExecutorClassSpec(MyExecutor) in the component
    definition to replace executor=MyExecutor from component constructor.
• Artifact definitions for standard TFX components have moved from using
  string type names into being concrete Artifact classes (see each official
  TFX component's ComponentSpec definition in types.standard_component_specs
  and the definition of built-in Artifact types in
  types.standard_artifacts).
• The base_component.ComponentOutputs class has been renamed to
  base_component._PropertyDictWrapper.
• The tfx.utils.types.TfxType class has been renamed to tfx.types.Artifact.
• The tfx.utils.channel.Channel class has been moved to tfx.types.Channel.
• The "static_artifact_collection" argument to types.Channel has been renamed
  to "artifacts".
• ArtifactType for artifacts will have two new properties: pipeline_name and
  producer_component.
• The ARTIFACT_STATE_* constants were consolidated into the
  types.artifacts.ArtifactState enum class.