TFX 1.7.0-rc0

Major Features and Improvements

• Added support for list-type Placeholder.

Breaking Changes

For Pipeline Authors

• N/A

For Component Authors

• N/A

Deprecations

• Removed the already-deprecated components.ImporterNode, should use
  v1.dsl.Importer instead.
• Deprecated Channel property setters. Use constructor argument instead.

Bug Fixes and Other Changes

• Fixed the cluster spec error in CAIP Tuner on Vertex when
  num_parallel_trials = 1
• Replaced deprecated assertDictContainsSubset with
  assertLessEqual(itemsA, itemsB).
• Updating Keras tutorial to make better use of Keras, and better feature
  engineering.
• Merges KFP UI Metadata file if it already exists. Now components can produce
  their own UI results and it will be merged with existing visualization.
• Switch Transform component to always use sketch when computing top-k stats.

Dependency Updates

Package Name	Version Constraints	Previously (in v1.6.0)	Comments
apache-beam[gcp]	~=2.36	~=2.35	Synced release train
google-cloud-aiplatform	>=1.6.2,<2	>=1.5.0,<2
ml-metadata	~=1.7.0	~=1.6.0	Synced release train
struct2tensor	~=0.38.0	~=0.37.0	Synced release train
tensorflow	>=1.15.5,<2 or ~=2.8.0	>=1.15.5,<2 or ~=2.7.0
tensorflow-data-validation	~=1.7.0	~=1.6.0	Synced release train
tensorflow-decision-forests	==0.2.4	==0.2.1
tensorflow-model-analysis	~=0.38.0	~=0.37.0	Synced release train
tensorflow-serving-api	>=1.15,<3 or ~=2.8.0	>=1.15,<3 or ~=2.7.0
tensorflow-transform	~=1.7.0	~=1.6.0	Synced release train
tfx-bsl	~=1.7.0	~=1.6.0	Synced release train

Documentation Updates

• N/A