fix(build): Harden the merge to main builds

Switch ubuntu-debug from BUNDLED to SYSTEM dependency resolution for
deps installed via install_apt_deps (CURL, ICU, gflags, glog, GTest,
re2, c-ares). This avoids flaky internet downloads for these deps.

Deps not available as system packages are explicitly set to BUNDLED:
DuckDB, fmt, simdjson, xsimd, FastFloat, stemmer, Boost, folly,
Protobuf, Arrow, geos, absl, gRPC, faiss.

Upgrade runner to 32-core-ubuntu for memory headroom.

Move bundled-deps testing to scheduled.yml to maintain coverage.

Author: kgpai

.github/workflows/linux-build-base.yml

@@ -222,7 +222,7 @@ jobs:
           python ./scripts/checks/run-clang-tidy.py -p $BUILD_PATH --commit $RANGE $FILES
 
   ubuntu-debug:
-    runs-on: 16-core-ubuntu
+    runs-on: 32-core-ubuntu
     # prevent errors when forks ff their main branch
     if: ${{ github.repository == 'facebookincubator/velox' }}
     name: Ubuntu debug with resolve_dependency
@@ -261,8 +261,24 @@ jobs:
 
       - name: Make Debug Build
         env:
-          VELOX_DEPENDENCY_SOURCE: BUNDLED
+          VELOX_DEPENDENCY_SOURCE: SYSTEM
           ICU_SOURCE: SYSTEM
+          # Deps not available as system packages (not installed by
+          # install_apt_deps). These must be built from source.
+          DuckDB_SOURCE: BUNDLED
+          fmt_SOURCE: BUNDLED
+          simdjson_SOURCE: BUNDLED
+          xsimd_SOURCE: BUNDLED
+          FastFloat_SOURCE: BUNDLED
+          stemmer_SOURCE: BUNDLED
+          Boost_SOURCE: BUNDLED
+          folly_SOURCE: BUNDLED
+          Protobuf_SOURCE: BUNDLED
+          Arrow_SOURCE: BUNDLED
+          geos_SOURCE: BUNDLED
+          absl_SOURCE: BUNDLED
+          gRPC_SOURCE: BUNDLED
+          faiss_SOURCE: BUNDLED
           MAKEFLAGS: NUM_THREADS=16 MAX_HIGH_MEM_JOBS=4 MAX_LINK_JOBS=2
         run: |
           EXTRA_CMAKE_FLAGS=(

.github/workflows/scheduled.yml

@@ -1476,3 +1476,73 @@ jobs:
     uses: ./.github/workflows/linux-build-base.yml
     with:
       use-clang: true
+
+  ubuntu-debug-bundled-deps:
+    runs-on: 16-core-ubuntu
+    # prevent errors when forks ff their main branch
+    if: ${{ github.repository == 'facebookincubator/velox' }}
+    name: Ubuntu debug with bundled dependencies
+    env:
+      CCACHE_DIR: ${{ github.workspace }}/ccache
+    defaults:
+      run:
+        shell: bash
+        working-directory: velox
+    steps:
+
+      - name: Get Ccache Stash
+        uses: apache/infrastructure-actions/stash/restore@3354c1565d4b0e335b78a76aedd82153a9e144d4
+        with:
+          path: ${{ env.CCACHE_DIR }}
+          key: ccache-ubuntu-debug-bundled-deps
+
+      - name: Ensure Stash Dirs Exists
+        working-directory: ${{ github.workspace }}
+        run: |
+          mkdir -p "$CCACHE_DIR"
+
+      - uses: actions/checkout@v5
+        with:
+          path: velox
+          persist-credentials: false
+
+      - name: Install Dependencies
+        run: |
+          source scripts/setup-ubuntu.sh && install_apt_deps && install_faiss_deps
+
+      - name: Clear CCache Statistics
+        run: |
+          ccache -sz
+
+      - name: Make Debug Build
+        env:
+          VELOX_DEPENDENCY_SOURCE: BUNDLED
+          ICU_SOURCE: SYSTEM
+          MAKEFLAGS: NUM_THREADS=16 MAX_HIGH_MEM_JOBS=4 MAX_LINK_JOBS=2
+        run: |
+          EXTRA_CMAKE_FLAGS=(
+            "-DCMAKE_LINK_LIBRARIES_STRATEGY=REORDER_FREELY"
+            "-DVELOX_ENABLE_BENCHMARKS=ON"
+            "-DVELOX_ENABLE_EXAMPLES=ON"
+            "-DVELOX_ENABLE_ARROW=ON"
+            "-DVELOX_ENABLE_GEO=ON"
+            "-DVELOX_ENABLE_PARQUET=ON"
+            "-DVELOX_MONO_LIBRARY=ON"
+            "-DVELOX_BUILD_SHARED=ON"
+            "-DVELOX_ENABLE_FAISS=ON"
+            "-DVELOX_ENABLE_REMOTE_FUNCTIONS=ON"
+          )
+          make debug
+
+      - name: CCache after
+        run: |
+          ccache -vs
+
+      - uses: apache/infrastructure-actions/stash/save@3354c1565d4b0e335b78a76aedd82153a9e144d4
+        with:
+          path: ${{ env.CCACHE_DIR }}
+          key: ccache-ubuntu-debug-bundled-deps
+
+      - name: Run Tests
+        run: |
+          cd _build/debug && ctest -j 8 --output-on-failure --no-tests=error