add libhdfs3 conf var

.github/workflows/linux-build.yml

@@ -58,6 +58,8 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Fix git permissions
+        # Usually actions/checkout does this but as we run in a container
+        # it doesn't work
         run: git config --global --add safe.directory /__w/velox/velox
 
       - uses: assignUser/stash/restore@v1
@@ -90,6 +92,8 @@ jobs:
       - name: Run Tests
         # Some of the adapters dependencies are in the 'adapters' conda env
         shell: mamba run --no-capture-output -n adapters /usr/bin/bash -e {0}
+        env:
+          LIBHDFS3_CONF="${{ github.workspace }}/.circleci/hdfs-client.xml"
         working-directory: _build/release
         run: |
           ctest -j 8 --output-on-failure --no-tests=error
@@ -127,7 +131,7 @@ jobs:
           VELOX_DEPENDENCY_SOURCE: BUNDLED
           MAKEFLAGS: "NUM_THREADS=8 MAX_HIGH_MEM_JOBS=4 MAX_LINK_JOBS=4"
         run: |
-          make debug
+          make debug EXTRA_CMAKE_FLAGS="-DVELOX_ENABLE_ARROW=ON"
 
       - name: CCache after
         run: |