Fix Github Action pending problem (apache#941)

* Fix Github Action pending problem

* Address comments

.github/workflows/backend.yml

@@ -37,6 +37,8 @@ jobs:
   build:
     name: Build
     runs-on: ubuntu-latest
+    env:
+      MAVEN_OPTS: -Xmx2G -Xms2G
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK 1.8
@@ -58,6 +60,8 @@ jobs:
                  -Dcheckstyle.skip=true \
                  -Dhttp.keepAlive=false \
                  -Dmaven.wagon.http.pool=false \
+                 -Dmaven.wagon.http.retryHandler.count=3 \
                  -Dmaven.wagon.httpconnectionManager.ttlSeconds=120
       - name: Run Unit tests
-        run: ./mvnw clean verify -B -Dmaven.test.skip=false -Dgpg.skip=true
+        run: |
+          ./mvnw -B clean verify -Dmaven.test.skip=false -Dgpg.skip=true

.github/workflows/publish-docker.yaml

@@ -58,6 +58,8 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
       - name: Build and push docker images
+        env:
+          MAVEN_OPTS: -Xmx2G -Xms2G
         run: |
           ./mvnw -B clean deploy \
           -Dmaven.test.skip \