chore: Speed up "PR Builds" CI workflows

.github/actions/java-test/action.yaml

@@ -26,6 +26,10 @@ inputs:
     description: 'Maven options passed to the mvn command'
     required: false
     default: ''
+  scan_impl:
+    description: 'The default Parquet scan implementation'
+    required: false
+    default: 'native_comet'
   upload-test-reports:
     description: 'Whether to upload test results including coverage to GitHub'
     required: false
@@ -58,11 +62,15 @@ runs:
     - name: Run all tests
       shell: bash
       if: ${{ inputs.suites == '' }}
+      env:
+        COMET_PARQUET_SCAN_IMPL: ${{ inputs.scan_impl }}
       run: |
         MAVEN_OPTS="-XX:+UnlockDiagnosticVMOptions -XX:+ShowMessageBoxOnError -XX:+HeapDumpOnOutOfMemoryError -XX:ErrorFile=./hs_err_pid%p.log" SPARK_HOME=`pwd` ./mvnw -B clean install ${{ inputs.maven_opts }}
     - name: Run specified tests
       shell: bash
       if: ${{ inputs.suites != '' }}
+      env:
+        COMET_PARQUET_SCAN_IMPL: ${{ inputs.scan_impl }}
       run: |
         MAVEN_SUITES="$(echo "${{ inputs.suites }}" | paste -sd, -)"
         echo "Running with MAVEN_SUITES=$MAVEN_SUITES"