From 06161451feb69b12c841f8f9b358ea125332c7cc Mon Sep 17 00:00:00 2001
From: Robert Escriva <robert@trychroma.com>
Date: Thu, 29 Jan 2026 09:42:03 -0800
Subject: [PATCH 1/2] [CHORE]  Split Python tests that run on main so half run
 on mcmr.

We want to test multi-cloud, multi-region without doubling CI wait times
or the overall sum of CPU consumed.  The fix is simple:  We already run
multiple Python versions, so run half of them on mcmr and half on the
classic tilt file.
---
 .github/workflows/_python-tests.yml    |  4 +++-
 .github/workflows/release-chromadb.yml | 11 ++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/_python-tests.yml b/.github/workflows/_python-tests.yml
index a9da6ed2981..0f338a6edf2 100644
--- a/.github/workflows/_python-tests.yml
+++ b/.github/workflows/_python-tests.yml
@@ -17,6 +17,7 @@ on:
         required: false
         default: 'blacksmith-8vcpu-ubuntu-2404'
         type: string
+      always_multi_region: false
 
 jobs:
   test-rust-bindings:
@@ -127,6 +128,7 @@ jobs:
       fail-fast: false
       matrix:
         python: ${{ fromJson(inputs.python_versions) }}
+        always_multi_region: ${{ fromJson(inputs.always_multi_region) }}
         test-glob:
           - "chromadb/test/api"
           - "chromadb/test/api/test_collection.py"
@@ -162,7 +164,7 @@ jobs:
       contents: read
       id-token: write
     env:
-      MULTI_REGION: ${{ matrix.multi_region && 'true' || '' }}
+      MULTI_REGION: ${{ matrix.always_multi_region || matrix.multi_region || "false" }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/.github/workflows/release-chromadb.yml b/.github/workflows/release-chromadb.yml
index 4f26ec63f9d..aef4953cecc 100644
--- a/.github/workflows/release-chromadb.yml
+++ b/.github/workflows/release-chromadb.yml
@@ -46,8 +46,17 @@ jobs:
     uses: ./.github/workflows/_python-tests.yml
     secrets: inherit
     with:
-      python_versions: '["3.9", "3.10", "3.11", "3.12"]'
+      python_versions: '["3.9", "3.11"]'
       property_testing_preset: 'normal'
+      always_multi_region: false
+
+  python-tests-linux-mcmr:
+    uses: ./.github/workflows/_python-tests.yml
+    secrets: inherit
+    with:
+      python_versions: '["3.10", "3.12"]'
+      property_testing_preset: 'normal'
+      always_multi_region: true
 
   python-tests-windows:
     uses: ./.github/workflows/_python-tests.yml

From 82bb1cfb8bf1cc5d75a82d186e3a668c4240e450 Mon Sep 17 00:00:00 2001
From: Robert Escriva <robert@trychroma.com>
Date: Tue, 3 Feb 2026 13:44:49 -0800
Subject: [PATCH 2/2] propel

---
 .github/workflows/_python-tests.yml    | 3 +--
 .github/workflows/release-chromadb.yml | 3 +++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/_python-tests.yml b/.github/workflows/_python-tests.yml
index 0f338a6edf2..bd61ed07a95 100644
--- a/.github/workflows/_python-tests.yml
+++ b/.github/workflows/_python-tests.yml
@@ -128,7 +128,6 @@ jobs:
       fail-fast: false
       matrix:
         python: ${{ fromJson(inputs.python_versions) }}
-        always_multi_region: ${{ fromJson(inputs.always_multi_region) }}
         test-glob:
           - "chromadb/test/api"
           - "chromadb/test/api/test_collection.py"
@@ -164,7 +163,7 @@ jobs:
       contents: read
       id-token: write
     env:
-      MULTI_REGION: ${{ matrix.always_multi_region || matrix.multi_region || "false" }}
+      MULTI_REGION: ${{ (inputs.always_multi_region || matrix.multi_region) && 'true' || '' }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/.github/workflows/release-chromadb.yml b/.github/workflows/release-chromadb.yml
index aef4953cecc..5218cfb5a18 100644
--- a/.github/workflows/release-chromadb.yml
+++ b/.github/workflows/release-chromadb.yml
@@ -88,6 +88,7 @@ jobs:
       - check-tag
       - get-version
       - python-tests-linux
+      - python-tests-linux-mcmr
       - python-tests-windows
       - javascript-client-tests
       - rust-tests
@@ -105,6 +106,7 @@ jobs:
       - check-tag
       - get-version
       - python-tests-linux
+      - python-tests-linux-mcmr
       - python-tests-windows
       - javascript-client-tests
       - rust-tests
@@ -122,6 +124,7 @@ jobs:
     needs:
       - check-tag
       - python-tests-linux
+      - python-tests-linux-mcmr
       - python-tests-windows
       - javascript-client-tests
       - rust-tests