From 065e3f726f92224e40642aa6a958f8db632552f0 Mon Sep 17 00:00:00 2001
From: Shenyang Cai <sycai@google.com>
Date: Fri, 15 May 2026 20:22:58 +0000
Subject: [PATCH 1/2] chore(bigframes): download more resources for load test
 setup

---
 .kokoro/load/common.cfg         | 11 +++++++++++
 .kokoro/load/load-bigframes.cfg |  7 -------
 2 files changed, 11 insertions(+), 7 deletions(-)
 create mode 100644 .kokoro/load/common.cfg

diff --git a/.kokoro/load/common.cfg b/.kokoro/load/common.cfg
new file mode 100644
index 000000000000..5a41769a75c9
--- /dev/null
+++ b/.kokoro/load/common.cfg
@@ -0,0 +1,11 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Build logs will be here
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
+
+# Download resources for system tests (service account key, etc.)
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/google-cloud-python"
diff --git a/.kokoro/load/load-bigframes.cfg b/.kokoro/load/load-bigframes.cfg
index a0731cc0783a..a05354d2ec5c 100644
--- a/.kokoro/load/load-bigframes.cfg
+++ b/.kokoro/load/load-bigframes.cfg
@@ -1,12 +1,5 @@
 # Format: //devtools/kokoro/config/proto/build.proto
 
-# Build logs will be here
-action {
-  define_artifacts {
-    regex: "**/*sponge_log.xml"
-  }
-}
-
 build_file: "google-cloud-python/.kokoro/build-bigframes.sh"
 timeout_mins: 720
 

From 131627eb04c6840cbd9ae537da898dfb009bd73a Mon Sep 17 00:00:00 2001
From: Shenyang Cai <sycai@google.com>
Date: Fri, 15 May 2026 21:14:45 +0000
Subject: [PATCH 2/2] switch to use trampoline

---
 .kokoro/build-bigframes.sh      | 55 ---------------------------------
 .kokoro/load/common.cfg         | 16 ++++++++++
 .kokoro/load/load-bigframes.cfg |  1 -
 3 files changed, 16 insertions(+), 56 deletions(-)
 delete mode 100644 .kokoro/build-bigframes.sh

diff --git a/.kokoro/build-bigframes.sh b/.kokoro/build-bigframes.sh
deleted file mode 100644
index 789a438283d1..000000000000
--- a/.kokoro/build-bigframes.sh
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/bin/bash
-# Copyright 2023 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -eo pipefail
-
-PROJECT_SCM="github/google-cloud-python/packages/bigframes"
-
-if [[ -z "${PROJECT_ROOT:-}" ]]; then
-    PROJECT_ROOT="${KOKORO_ARTIFACTS_DIR}/${PROJECT_SCM}"
-fi
-
-cd "${PROJECT_ROOT}"
-
-# Disable buffering, so that the logs stream through.
-export PYTHONUNBUFFERED=1
-
-# Workaround https://github.com/pytest-dev/pytest/issues/9567
-export PY_IGNORE_IMPORTMISMATCH=1
-
-# Debug: show build environment
-env | grep KOKORO
-
-# Install pip
-python3 -m pip install --upgrade --quiet pip
-python3 -m pip --version
-
-# Remove old nox
-python3 -m pip uninstall --yes --quiet nox-automation
-
-# Install nox
-python3 -m pip install --upgrade --quiet nox
-python3 -m nox --version
-
-# If NOX_SESSION is set, it only runs the specified session,
-# otherwise run all the sessions.
-if [[ -n "${NOX_SESSION:-}" ]]; then
-    python3 -m nox --stop-on-first-error -s ${NOX_SESSION:-}
-else
-    python3 -m nox --stop-on-first-error
-fi
-
-# Prevent kokoro from trying to collect many mb of artifacts, wasting several minutes
-sudo rm -rf "${KOKORO_ARTIFACTS_DIR?}"/*
\ No newline at end of file
diff --git a/.kokoro/load/common.cfg b/.kokoro/load/common.cfg
index 5a41769a75c9..175a4e8fd7a2 100644
--- a/.kokoro/load/common.cfg
+++ b/.kokoro/load/common.cfg
@@ -7,5 +7,21 @@ action {
   }
 }
 
+# Download trampoline resources.
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
+
 # Download resources for system tests (service account key, etc.)
 gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/google-cloud-python"
+
+# Use the trampoline script to run in docker.
+build_file: "google-cloud-python/.kokoro/trampoline.sh"
+
+# Configure the docker image for kokoro-trampoline.
+env_vars: {
+    key: "TRAMPOLINE_IMAGE"
+    value: "gcr.io/cloud-devrel-kokoro-resources/python-multi"
+}
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/google-cloud-python/.kokoro/system.sh"
+}
diff --git a/.kokoro/load/load-bigframes.cfg b/.kokoro/load/load-bigframes.cfg
index a05354d2ec5c..6975908ae3eb 100644
--- a/.kokoro/load/load-bigframes.cfg
+++ b/.kokoro/load/load-bigframes.cfg
@@ -1,6 +1,5 @@
 # Format: //devtools/kokoro/config/proto/build.proto
 
-build_file: "google-cloud-python/.kokoro/build-bigframes.sh"
 timeout_mins: 720
 
 # Only run this nox session.