diff --git a/.github/workflows/pxf-ci.yml b/.github/workflows/pxf-ci.yml
index 83188f35..d10d5ab2 100644
--- a/.github/workflows/pxf-ci.yml
+++ b/.github/workflows/pxf-ci.yml
@@ -19,14 +19,19 @@ env:
   JAVA_HOME: "/usr/lib/jvm/java-11-openjdk"
   GO_VERSION: "1.21"
   GPHOME: "/usr/local/cloudberry-db"
-  CLOUDBERRY_VERSION: "main"
   PXF_HOME: "/usr/local/pxf"
 
 jobs:
   # Stage 1: Build artifacts (runs in parallel)
   build-cloudberry-deb:
-    name: Build Cloudberry DEB Package
+    name: Build Cloudberry DEB (${{ matrix.cloudberry_branch }})
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        cloudberry_branch:
+          - main
+          - REL_2_STABLE
     container:
       image: apache/incubator-cloudberry:cbdb-build-ubuntu22.04-latest
       options: --user root
@@ -35,7 +40,7 @@ jobs:
       uses: actions/checkout@v4
       with:
         repository: apache/cloudberry
-        ref: ${{ env.CLOUDBERRY_VERSION }}
+        ref: ${{ matrix.cloudberry_branch }}
         path: workspace/cloudberry
         submodules: true
 
@@ -47,7 +52,10 @@ jobs:
     - name: Build Cloudberry DEB
       run: |
         export WORKSPACE=$PWD/workspace
-        export CLOUDBERRY_VERSION=99.0.0
+        # Sanitize branch name for Debian version (replace _ with -)
+        BRANCH_NAME="${{ matrix.cloudberry_branch }}"
+        CLEAN_BRANCH=$(echo "$BRANCH_NAME" | tr '_' '-')
+        export CLOUDBERRY_VERSION=99.0.0-${CLEAN_BRANCH}
         export CLOUDBERRY_BUILD=1
         bash cloudberry-pxf/ci/docker/pxf-cbdb-dev/ubuntu/script/build_cloudberry_deb.sh
 
@@ -59,14 +67,14 @@ jobs:
     - name: Upload DEB artifact
       uses: actions/upload-artifact@v4
       with:
-        name: cloudberry-deb
+        name: cloudberry-deb-${{ matrix.cloudberry_branch }}
         path: workspace/cloudberry-deb/*.deb
         retention-days: 7
 
     - name: Upload Cloudberry source artifact
       uses: actions/upload-artifact@v4
       with:
-        name: cloudberry-source
+        name: cloudberry-source-${{ matrix.cloudberry_branch }}
         path: workspace/cloudberry-source.tar.gz
         retention-days: 7
 
@@ -94,12 +102,15 @@ jobs:
 
   # Stage 2: Parallel test jobs using matrix strategy
   pxf-test:
-    name: Test PXF - ${{ matrix.test_group }}
+    name: Test PXF - ${{ matrix.test_group }} (${{ matrix.cloudberry_branch }})
     needs: [build-cloudberry-deb, build-docker-images]
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
+        cloudberry_branch:
+          - main
+          - REL_2_STABLE
         test_group:
           - cli
           - external-table
@@ -143,13 +154,13 @@ jobs:
     - name: Download Cloudberry DEB
       uses: actions/download-artifact@v4
       with:
-        name: cloudberry-deb
+        name: cloudberry-deb-${{ matrix.cloudberry_branch }}
         path: /tmp
 
     - name: Download Cloudberry source
       uses: actions/download-artifact@v4
       with:
-        name: cloudberry-source
+        name: cloudberry-source-${{ matrix.cloudberry_branch }}
         path: /tmp
 
     - name: Download singlecluster image
@@ -248,7 +259,7 @@ jobs:
       if: always()
       uses: actions/upload-artifact@v4
       with:
-        name: test-results-${{ matrix.test_group }}
+        name: test-results-${{ matrix.cloudberry_branch }}-${{ matrix.test_group }}
         path: artifacts/**
         if-no-files-found: ignore
         retention-days: 7
@@ -291,11 +302,30 @@ jobs:
         GROUPS_FAILED=0
         FAILED_GROUP_NAMES=""
         
+        # Branch-specific counters
+        declare -A BRANCH_PASSED
+        declare -A BRANCH_FAILED
+        
         # Collect all test stats
         declare -A GROUP_STATS
         
         for dir in all-artifacts/test-results-*; do
           if [ -d "$dir" ] && [ -f "$dir/test_stats.json" ]; then
+            # Extract branch and group from directory name: test-results-<branch>-<group>
+            dirname=$(basename "$dir")
+            # Try to extract branch from test_stats.json if available, fallback to directory parsing
+            branch=$(cat "$dir/test_stats.json" | grep -oP '"branch":\s*"\K[^"]+' || echo "")
+            if [ -z "$branch" ]; then
+              # Parse from directory name: test-results-main-cli or test-results-REL_2_STABLE-cli
+              if [[ "$dirname" == *"-main-"* ]]; then
+                branch="main"
+              elif [[ "$dirname" == *"-REL_2_STABLE-"* ]]; then
+                branch="REL_2_STABLE"
+              else
+                branch="unknown"
+              fi
+            fi
+            
             group=$(cat "$dir/test_stats.json" | grep -oP '"group":\s*"\K[^"]+' || basename "$dir" | sed 's/test-results-//')
             result=$(cat "$dir/test_stats.json" | grep -oP '"result":\s*"\K[^"]+' || echo "unknown")
             total=$(cat "$dir/test_stats.json" | grep -oP '"total":\s*\K\d+' || echo "0")
@@ -303,7 +333,9 @@ jobs:
             failed=$(cat "$dir/test_stats.json" | grep -oP '"failed":\s*\K\d+' || echo "0")
             skipped=$(cat "$dir/test_stats.json" | grep -oP '"skipped":\s*\K\d+' || echo "0")
             
-            GROUP_STATS[$group]="$result,$total,$passed,$failed,$skipped"
+            # Use branch-group as key
+            key="${branch}/${group}"
+            GROUP_STATS[$key]="$result,$total,$passed,$failed,$skipped,$branch,$group"
             
             OVERALL_TOTAL=$((OVERALL_TOTAL + total))
             OVERALL_PASSED=$((OVERALL_PASSED + passed))
@@ -312,9 +344,11 @@ jobs:
             
             if [ "$result" == "success" ] && [ "$failed" -eq 0 ]; then
               GROUPS_PASSED=$((GROUPS_PASSED + 1))
+              BRANCH_PASSED[$branch]=$((${BRANCH_PASSED[$branch]:-0} + 1))
             else
               GROUPS_FAILED=$((GROUPS_FAILED + 1))
-              FAILED_GROUP_NAMES="${FAILED_GROUP_NAMES}${group} "
+              BRANCH_FAILED[$branch]=$((${BRANCH_FAILED[$branch]:-0} + 1))
+              FAILED_GROUP_NAMES="${FAILED_GROUP_NAMES}${key} "
             fi
           fi
         done
@@ -334,20 +368,36 @@ jobs:
         echo "- Skipped: $OVERALL_SKIPPED" >> $GITHUB_STEP_SUMMARY
         echo "" >> $GITHUB_STEP_SUMMARY
         
+        # Summary by branch
+        echo "### Summary by Cloudberry Branch" >> $GITHUB_STEP_SUMMARY
+        echo "" >> $GITHUB_STEP_SUMMARY
+        echo "| Branch | Passed Groups | Failed Groups |" >> $GITHUB_STEP_SUMMARY
+        echo "|--------|-------------:|-------------:|" >> $GITHUB_STEP_SUMMARY
+        for branch in main REL_2_STABLE; do
+          p=${BRANCH_PASSED[$branch]:-0}
+          f=${BRANCH_FAILED[$branch]:-0}
+          if [ $f -eq 0 ]; then
+            echo "| $branch | ✅ $p | $f |" >> $GITHUB_STEP_SUMMARY
+          else
+            echo "| $branch | $p | ❌ $f |" >> $GITHUB_STEP_SUMMARY
+          fi
+        done
+        echo "" >> $GITHUB_STEP_SUMMARY
+        
         # Detailed table
-        echo "### Test Results by Group" >> $GITHUB_STEP_SUMMARY
+        echo "### Test Results by Branch and Group" >> $GITHUB_STEP_SUMMARY
         echo "" >> $GITHUB_STEP_SUMMARY
-        echo "| Test Group | Status | Passed | Failed | Skipped | Total |" >> $GITHUB_STEP_SUMMARY
-        echo "|------------|--------|-------:|-------:|--------:|------:|" >> $GITHUB_STEP_SUMMARY
+        echo "| Branch | Test Group | Status | Passed | Failed | Skipped | Total |" >> $GITHUB_STEP_SUMMARY
+        echo "|--------|------------|--------|-------:|-------:|--------:|------:|" >> $GITHUB_STEP_SUMMARY
         
-        for group in $(echo "${!GROUP_STATS[@]}" | tr ' ' '\n' | sort); do
-          IFS=',' read -r result total passed failed skipped <<< "${GROUP_STATS[$group]}"
+        for key in $(echo "${!GROUP_STATS[@]}" | tr ' ' '\n' | sort); do
+          IFS=',' read -r result total passed failed skipped branch group <<< "${GROUP_STATS[$key]}"
           if [ "$result" == "success" ] && [ "$failed" -eq 0 ]; then
             status="✅ PASS"
           else
             status="❌ FAIL"
           fi
-          echo "| $group | $status | $passed | $failed | $skipped | $total |" >> $GITHUB_STEP_SUMMARY
+          echo "| $branch | $group | $status | $passed | $failed | $skipped | $total |" >> $GITHUB_STEP_SUMMARY
         done
         
         echo "" >> $GITHUB_STEP_SUMMARY
@@ -357,3 +407,4 @@ jobs:
           echo "::error::${GROUPS_FAILED} test group(s) failed: ${FAILED_GROUP_NAMES}"
           exit 1
         fi
+