From 72e3e00caf544633befc074774e6e77f4d393523 Mon Sep 17 00:00:00 2001
From: Zack Winter <3457246+zackwintermdb@users.noreply.github.com>
Date: Mon, 8 Dec 2025 12:01:52 -0800
Subject: [PATCH] SERVER-114982: Enable compressed bazel exec log by default
 (#44882)

GitOrigin-RevId: 236dd7dea0e0876bf5dcec82cb64c8e83c617d65
---
 .bazelignore                                               | 1 +
 .bazelrc                                                   | 7 +++++++
 .github/CODEOWNERS                                         | 1 +
 .gitignore                                                 | 2 ++
 .tmp/_placeholder_                                         | 0
 OWNERS.yml                                                 | 3 +++
 .../tasks/compile_tasks_shared.yml                         | 1 +
 tools/bazel                                                | 3 +++
 tools/bazel.bat                                            | 5 ++++-
 9 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 .tmp/_placeholder_

diff --git a/.bazelignore b/.bazelignore
index 775cd42a47a..c9763483539 100644
--- a/.bazelignore
+++ b/.bazelignore
@@ -25,3 +25,4 @@ python3-venv
 venv
 
 .ijwb
+.git
diff --git a/.bazelrc b/.bazelrc
index 0c82727ba52..c6b618d3ac5 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -582,6 +582,10 @@ common --experimental_repository_downloader_retries=3
 # Place golden test output files where buildscripts/golden_tests.py can find them
 common --test_env=GOLDEN_TEST_CONFIG_PATH
 
+# Upload build events to EngFlow
+common --experimental_build_event_upload_strategy=remote
+
+
 # TODO(WT-12780): delete this once wiredtiger switches to /.bazelrc.evergreen.
 try-import %workspace%/.bazelrc.evergreen_engflow_creds
 
@@ -605,3 +609,6 @@ try-import %workspace%/.bazelrc.bazelisk
 
 # Flags synced from Flag Sync
 try-import %workspace%/.bazelrc.sync
+
+# Repository root absolute path to set --execution_log_compact_file
+try-import %workspace%/.bazelrc.exec_log_file
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index d9314498301..0df6f91ae42 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -36,6 +36,7 @@ README.third_party.md @10gen/code-review-team-ssdlc @svc-auto-approve-bot
 sbom.json @10gen/code-review-team-ssdlc @svc-auto-approve-bot
 MODULE.bazel* @10gen/devprod-build @svc-auto-approve-bot
 WORKSPACE.bazel @10gen/devprod-build @svc-auto-approve-bot
+.tmp/* @10gen/devprod-build @svc-auto-approve-bot
 
 # The following patterns are parsed from ./.cursor/rules/OWNERS.yml
 /.cursor/rules/**/cs-* @10gen/server-cluster-scalability @svc-auto-approve-bot
diff --git a/.gitignore b/.gitignore
index 4d95029ff61..b744ddc79b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,7 @@
 /merged_decls.json
 /modules_dump.yaml
 /.tmp
+!/.tmp/_placeholder_
 venv
 
 *~
@@ -304,6 +305,7 @@ buildozer
 .compiledb
 .bazelrc.xcode
 .bazelrc.bazelisk
+.bazelrc.exec_log_file
 *.bazel_info_for_ninja.txt
 .ninja_last_command_line_targets.txt
 bazel/coverity/analysis/BUILD.bazel
diff --git a/.tmp/_placeholder_ b/.tmp/_placeholder_
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/OWNERS.yml b/OWNERS.yml
index 8579f9f66d3..14cb11c3565 100644
--- a/OWNERS.yml
+++ b/OWNERS.yml
@@ -101,3 +101,6 @@ filters:
   - "WORKSPACE.bazel":
     approvers:
       - 10gen/devprod-build
+  - ".tmp/*":
+    approvers:
+      - 10gen/devprod-build
diff --git a/etc/evergreen_yml_components/tasks/compile_tasks_shared.yml b/etc/evergreen_yml_components/tasks/compile_tasks_shared.yml
index 4b427ccbd55..6258ff85e77 100644
--- a/etc/evergreen_yml_components/tasks/compile_tasks_shared.yml
+++ b/etc/evergreen_yml_components/tasks/compile_tasks_shared.yml
@@ -268,6 +268,7 @@ tasks:
             "src/src/third_party/mock_ocsp_responder/**"
             "src/src/third_party/protobuf/**"
             "src/src/third_party/schemastore.org/**"
+            "src/.tmp/_placeholder_"
             "src/tools/**"
             "src/x509/**"
 
diff --git a/tools/bazel b/tools/bazel
index b412d328d93..9748c092713 100755
--- a/tools/bazel
+++ b/tools/bazel
@@ -54,6 +54,9 @@ fi
 
 echo "common --//bazel/config:running_through_bazelisk" > $REPO_ROOT/.bazelrc.bazelisk
 
+# Write a compressed execution log to a file for EngFlow to pick up for more detailed analysis.
+echo "common --execution_log_compact_file=$REPO_ROOT/.tmp/bazel_execution_log.binpb.zst" > $REPO_ROOT/.bazelrc.exec_log_file
+
 if [[ $MONGO_BAZEL_WRAPPER_DEBUG == 1 ]]; then
     wrapper_start_time="$(date -u +%s.%N)"
 fi
diff --git a/tools/bazel.bat b/tools/bazel.bat
index 651e4d4de5e..8d6ccbac900 100644
--- a/tools/bazel.bat
+++ b/tools/bazel.bat
@@ -31,9 +31,12 @@ set "VT_SCRIPT=%TEMP%\bazel_vt_%RANDOM%.ps1"
 >nul 2>&1 powershell -NoProfile -ExecutionPolicy Bypass -File "%VT_SCRIPT%"
 del "%VT_SCRIPT%" >nul 2>&1
 
+set REPO_ROOT=%~dp0..
+
 echo common --//bazel/config:running_through_bazelisk > .bazelrc.bazelisk
 
-set REPO_ROOT=%~dp0..
+REM Write a compressed execution log to a file for EngFlow to pick up for more detailed analysis.
+echo common --execution_log_compact_file=%REPO_ROOT:\=/%/.tmp/bazel_execution_log.binpb.zst > .bazelrc.exec_log_file
 
 for %%I in (%REPO_ROOT%) do set cur_dir=%%~nxI