Fix GH Actions for doc-only PR

When there is no code change, some steps in the GA workflow can't
run and cause errors. Put the `if condition` to check the code
change in those steps.

Signed-off-by: Yihong Wang <yh.wang@ibm.com>

Author: yhwang

.github/workflows/arrow-flight-tests.yml

@@ -2,6 +2,8 @@ name: arrow flight tests
 
 on:
   pull_request:
+    paths-ignore:
+      - 'presto-docs/**'
 
 env:
   CONTINUOUS_INTEGRATION: true
@@ -12,22 +14,8 @@ env:
   RETRY: .github/bin/retry
 
 jobs:
-  changes:
-    runs-on: ubuntu-latest
-    permissions:
-      pull-requests: read
-    outputs:
-      codechange: ${{ steps.filter.outputs.codechange }}
-    steps:
-      - uses: dorny/paths-filter@v2
-        id: filter
-        with:
-          filters: |
-            codechange:
-               - '!presto-docs/**'
   test:
     runs-on: ubuntu-latest
-    needs: changes
     strategy:
       fail-fast: false
       matrix:
@@ -42,13 +30,11 @@ jobs:
     steps:
       # Checkout the code only if there are changes in the relevant files
       - uses: actions/checkout@v4
-        if: needs.changes.outputs.codechange == 'true'
         with:
           show-progress: false
 
       # Set up Java and dependencies for the build environment
       - uses: actions/setup-java@v4
-        if: needs.changes.outputs.codechange == 'true'
         with:
           distribution: 'temurin'
           java-version: 8
@@ -58,12 +44,10 @@ jobs:
 
       # Install dependencies for the target module
       - name: Maven Install
-        if: needs.changes.outputs.codechange == 'true'
         run: |
           export MAVEN_OPTS="${MAVEN_INSTALL_OPTS}"
           ./mvnw install ${MAVEN_FAST_INSTALL} -am -pl ${{ matrix.modules }}
 
       # Run Maven tests for the target module
       - name: Maven Tests
-        if: needs.changes.outputs.codechange == 'true'
         run: ./mvnw test ${MAVEN_TEST} -pl ${{ matrix.modules }}

.github/workflows/tests.yml

@@ -76,11 +76,13 @@ jobs:
         with:
           show-progress: false
       - uses: actions/setup-java@v4
+        if: needs.changes.outputs.codechange == 'true'
         with:
           distribution: 'temurin'
           java-version: 8
           cache: 'maven'
       - name: Download nodejs to maven cache
+        if: needs.changes.outputs.codechange == 'true'
         run: .github/bin/download_nodejs
       - name: Maven Install
         if: needs.changes.outputs.codechange == 'true'