diff --git a/.github/workflows/ci-integration-backwards-compatibility.yaml b/.github/workflows/ci-integration-backwards-compatibility.yaml
index 3cdd7c01de0cc..3123c63d5457e 100644
--- a/.github/workflows/ci-integration-backwards-compatibility.yaml
+++ b/.github/workflows/ci-integration-backwards-compatibility.yaml
@@ -44,31 +44,68 @@ jobs:
           args: site2 .github deployment .asf.yaml
 
       - name: Set up JDK 1.8
-        if: steps.docs.outputs.changed_only == 'no'
         uses: actions/setup-java@v1
         with:
           java-version: 1.8
 
+      - name: get space size
+        run: df -h
+
+      - name: get file size
+        run: du -sh
+
+      - name: clean disk
+        run: |
+          sudo swapoff -a
+          sudo rm -f /swapfile
+          sudo apt clean
+          docker rmi -f $(docker image ls -aq)
+          df -h
+
+      - name: get space size
+        run: df -h
+
       - name: run install by skip tests
-        if: steps.docs.outputs.changed_only == 'no'
         run: mvn clean install -DskipTests
 
+      - name: get space size
+        run: df -h
+
+      - name: get file size
+        run: du -sh
+
+      - name: get directory size
+        run: ls /
+
+      - name: get file size
+        run: sudo du -sh /
+
       - name: build artifacts and docker image
-        if: steps.docs.outputs.changed_only == 'no'
         run: mvn -B -f tests/docker-images/pom.xml install -am -Pdocker -DskipTests
 
+      - name: get docker size
+        run: df -h
+
+      - name: get docker size
+        run: docker images
+
+      - name: get file size
+        run: du -sh /
+
       - name: clean docker container
-        if: steps.docs.outputs.changed_only == 'no'
         run: docker system prune -f
 
       - name: remove docker node image
-        if: steps.docs.outputs.changed_only == 'no'
         run: docker rmi -f node:10 && docker rmi -f node:12 && docker rmi -f buildpack-deps:stretch
 
       - name: remove docker builder and microsoft image
-        if: steps.docs.outputs.changed_only == 'no'
         run: docker rmi -f jekyll/builder:latest && docker rmi -f mcr.microsoft.com/azure-pipelines/node8-typescript:latest
 
+      - name: get docker size
+        run: df -h
+
+      - name: get docker size
+        run: docker images
+
       - name: run integration tests
-        if: steps.docs.outputs.changed_only == 'no'
         run: mvn -B -f tests/pom.xml test -DintegrationTestSuiteFile=pulsar-backwards-compatibility.xml -DintegrationTests -DredirectTestOutputToFile=false