feat(build): add gcc8 ci to avoid some test failure

.github/workflows/gcc8_test.yaml

@@ -0,0 +1,57 @@
+# Copyright 2026-present Alibaba Inc.
+#
+# 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
+#
+#   http://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.
+
+name: Gcc 8 Test
+
+on:
+  push:
+    branches:
+      - '**'
+    tags:
+      - '**'
+  pull_request:
+
+concurrency:
+  group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  gcc8-test:
+    runs-on: ubuntu-22.04
+    container:
+      image: ubuntu:20.04
+    timeout-minutes: 120
+    strategy:
+      fail-fast: false
+    steps:
+      - name: Install dependencies
+        run: |
+          apt-get update
+          DEBIAN_FRONTEND=noninteractive apt-get install -y gcc-8 g++-8 ninja-build git git-lfs tar curl tzdata zip unzip pkg-config build-essential python3-dev
+          curl -L -O https://github.com/Kitware/CMake/releases/download/v3.28.3/cmake-3.28.3-linux-x86_64.tar.gz
+          tar -zxvf cmake-3.28.3-linux-x86_64.tar.gz -C /usr/local --strip-components=1
+          rm cmake-3.28.3-linux-x86_64.tar.gz
+      - name: Checkout paimon-cpp
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          lfs: true
+      - name: Build Paimon
+        shell: bash
+        env:
+          CC: gcc-8
+          CXX: g++-8
+        run: ci/scripts/build_paimon.sh $(pwd)

ci/scripts/build_paimon.sh

@@ -25,13 +25,24 @@ build_dir=${1}/build
 mkdir ${build_dir}
 pushd ${build_dir}
 
+ENABLE_LUMINA="ON"
+ENABLE_LANCE="ON"
+if [[ "${CC:-}" == *"gcc-8"* ]] || [[ "${CXX:-}" == *"g++-8"* ]]; then
+    ENABLE_LUMINA="OFF" # Lumina is only supported on GCC 9 or higher.
+    ENABLE_LANCE="OFF"
+    # Lance's prebuilt binaries can only be compiled on Ubuntu 22.04 and above
+    # which requires a higher version of glibc,
+    # but Ubuntu 22.04 and above no longer ships with gcc-8 by default.
+    # Consider supporting Lance from source compilation in the future
+fi
+
 CMAKE_ARGS=(
     "-G Ninja"
     "-DCMAKE_BUILD_TYPE=${build_type}"
     "-DPAIMON_BUILD_TESTS=ON"
-    "-DPAIMON_ENABLE_LANCE=ON"
+    "-DPAIMON_ENABLE_LANCE=${ENABLE_LANCE}"
     "-DPAIMON_ENABLE_JINDO=ON"
-    "-DPAIMON_ENABLE_LUMINA=ON"
+    "-DPAIMON_ENABLE_LUMINA=${ENABLE_LUMINA}"
     "-DPAIMON_ENABLE_LUCENE=ON"
 )
 

cmake_modules/ThirdpartyToolchain.cmake

@@ -1145,7 +1145,8 @@ macro(build_arrow)
         -DZSTD_ROOT=${ARROW_ZSTD_ROOT}
         -DZLIB_ROOT=${ARROW_ZLIB_ROOT}
         -DSnappy_ROOT=${ARROW_SNAPPY_ROOT}
-        -DLZ4_ROOT=${ARROW_LZ4_ROOT})
+        -DLZ4_ROOT=${ARROW_LZ4_ROOT}
+        -DBUILD_WARNING_LEVEL=PRODUCTION) # ignore warnings under gcc8
 
     set(ARROW_CONFIGURE SOURCE_SUBDIR "cpp" CMAKE_ARGS ${ARROW_CMAKE_ARGS})
     set(PATCH_FILE "${CMAKE_CURRENT_LIST_DIR}/arrow.diff")

docs/source/building.rst

@@ -29,7 +29,7 @@ and invoke ``cmake $CMAKE_ARGS ..`` from this directory.
 
 Building requires:
 
-* A C++17-enabled compiler. On Linux, gcc 9 and higher should be
+* A C++17-enabled compiler. On Linux, gcc 8 and higher should be
   sufficient. Windows and MacOS are not supported for now.
 * At least 2GB of RAM for a minimal build, 8GB for a minimal
   debug build with tests and 16GB for a full build.
@@ -122,7 +122,7 @@ boolean flags to ``cmake``.
 * ``-DPAIMON_ENABLE_LANCE=ON``: Paimon integration with Lance
 * ``-DPAIMON_ENABLE_AVRO=ON``: Apache Avro libraries and Paimon integration
 * ``-DPAIMON_ENABLE_JINDO=ON``: Support for Alibaba Jindo filesystems
-* ``-DPAIMON_ENABLE_LUMINA=ON``: Support for Lumina vector index
+* ``-DPAIMON_ENABLE_LUMINA=ON``: Support for Lumina vector index, lumina is only supported on gcc9 or higher.
 
 Optional Targets
 ~~~~~~~~~~~~~~~~