Adds a dependency to google-api-core to help pip dependency resolution.

RELEASE.md

@@ -28,6 +28,7 @@
 
 | Package Name | Version Constraints | Previously (in `v1.8.0`) | Comments |
 | -- | -- | -- | -- |
+| `google-api-core` | `<2` | N/A | Added to help pip dependency resolution. google-api-core was already a transitive dependency. |
 | `tensorflow` | `>=1.15.5,<2` or `~=2.9.0` | `>=1.15.5,<2` or `~=2.8.0` | |
 | `tensorflow-ranking` | `~=0.5.0` | `~=0.3.0` | Required for TF 2.9 |
 | `typing-extensions` | `>=3.10.0.2,<5` | N/A | For typing utilities |
@@ -40,7 +41,6 @@
 | `tfx-bsl` | `~=1.9.0` | `~=1.8.0` | Synced release train |
 
 
-
 ## Documentation Updates
 
 *   N/A

tfx/dependencies.py

@@ -76,6 +76,12 @@ def make_required_install_packages():
       'apache-beam[gcp]>=2.38,<3',
       'attrs>=19.3.0,<21',
       'click>=7,<8',
+      # TODO(b/238946565): Remove pinned version when pip can find depenencies
+      # without this. `google-api-core` is needed for many google cloud
+      # packages. `google-cloud-recommendations-ai==0.2.0` is a dependency of
+      # apache-beam[gcp] and it requires 'google-api-core<2' which cause a lot
+      # of backtracking.
+      'google-api-core<2',
       'google-cloud-aiplatform>=1.6.2,<2',
       'google-cloud-bigquery>=2.26.0,<3',
       'grpcio>=1.28.1,<2',