diff --git a/CI/circle_parallel.sh b/CI/circle_parallel.sh
new file mode 100755
index 00000000000..3487a09bf6e
--- /dev/null
+++ b/CI/circle_parallel.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+NODE_INDEX=${CIRCLE_NODE_INDEX:-0}
+
+
+if [ "$NODE_INDEX" = "1" ]; then
+  echo "Running node $NODE_INDEX to test CI/pom.xml.circleci ..."
+  cp CI/pom.xml.circleci pom.xml
+  java -version
+  mvn --quiet verify -Psamples
+else
+  echo "Running node $NODE_INDEX to test CI/pom.xml.circleci.java7 ..."
+  sudo update-java-alternatives -s java-1.7.0-openjdk-amd64
+  java -version
+  cp CI/pom.xml.circleci.java7 pom.xml
+  mvn --quiet verify -Psamples
+fi
+
+
diff --git a/CI/pom.xml.circleci b/CI/pom.xml.circleci
index 77cdcd5f79d..7c65c920d66 100644
--- a/CI/pom.xml.circleci
+++ b/CI/pom.xml.circleci
@@ -844,10 +844,12 @@
                 <module>samples/client/petstore/java/feign</module>
                 <module>samples/client/petstore/java/jersey1</module>
                 <module>samples/client/petstore/java/jersey2</module>
+                <module>samples/client/petstore/java/jersey2-java8</module>
                 <module>samples/client/petstore/java/okhttp-gson</module>
                 <module>samples/client/petstore/java/retrofit</module>
                 <module>samples/client/petstore/java/retrofit2</module>
                 <module>samples/client/petstore/java/retrofit2rx</module>
+                <module>samples/client/petstore/java/retrofit2-play25</module>
                 <module>samples/client/petstore/jaxrs-cxf-client</module>
                 <module>samples/client/petstore/java/resttemplate</module>
                 <module>samples/client/petstore/java/resttemplate-withXml</module>
diff --git a/CI/pom.xml.circleci.java7 b/CI/pom.xml.circleci.java7
index e3820742065..b1ca8600cc5 100644
--- a/CI/pom.xml.circleci.java7
+++ b/CI/pom.xml.circleci.java7
@@ -852,9 +852,6 @@
                 <module>samples/client/petstore/java/resteasy</module>
                 <module>samples/client/petstore/java/google-api-client</module>
                 <module>samples/client/petstore/kotlin/</module>
-                <!-- test non-java projects -->
-                <!--<module>samples/client/petstore/go</module>-->
-                <module>samples/client/petstore/typescript-angular-v6-provided-in-root</module>
                 <!-- servers -->
                 <module>samples/server/petstore/java-vertx/rx</module>
                 <module>samples/server/petstore/java-vertx/async</module>
diff --git a/circle.yml b/circle.yml
index 844fa6a2710..bfbe40bcedd 100644
--- a/circle.yml
+++ b/circle.yml
@@ -1,10 +1,16 @@
 version: 2
 jobs:
   build:
+    #    docker:
+    #      #- image: openapitools/openapi-generator
+    #      - image: swaggerapi/petstore
+    #        environment:
+    #          SWAGGER_HOST=http://petstore.swagger.io
+    #          SWAGGER_BASE_PATH=/v2
     machine:
       docker_layer_caching: true
     working_directory: ~/OpenAPITools/openapi-generator
-    parallelism: 1
+    parallelism: 2
     shell: /bin/bash --login
     environment:
       CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
@@ -37,12 +43,6 @@ jobs:
          printf '127.0.0.1       petstore.swagger.io
          ' | sudo tee -a /etc/hosts
     # Dependencies
-    #   This would typically go in either a build or a build-and-test job when using workflows
-    # This is based on your 1.0 configuration file or project settings
-    - run: sudo add-apt-repository ppa:duggan/bats --yes
-    - run: sudo apt-get update -qq
-    - run: sudo apt-get install -qq bats
-    - run: sudo apt-get install -qq curl
     # Install latest stable node for angular 6
     - run:
         name: Install node@stable (for angular 6)
@@ -65,21 +65,9 @@ jobs:
     - run: docker ps -a
     - run: sleep 30
     - run: cat /etc/hosts
-    # This is based on your 1.0 configuration file or project settings
-    - run: cp CI/pom.xml.circleci pom.xml
     # Test
-    #   This would typically be a build job when using workflows, possibly combined with build
-    # This is based on your 1.0 configuration file or project settings
-    #- run: java -version
     - run: mvn --quiet clean install
-    - run: mvn --quiet verify -Psamples
-    - run: if [ $? -ne 0 ]; then exit 1; fi
-    - run: sudo update-java-alternatives -s java-1.7.0-openjdk-amd64
-    - run: java -version
-    - run: cp CI/pom.xml.circleci.java7 pom.xml
-    - run: mvn --quiet clean install
-    - run: mvn --quiet verify -Psamples
-    - run: if [ $? -ne 0 ]; then exit 1; fi
+    - run: ./CI/circle_parallel.sh 
     # Save dependency cache
     - save_cache:
         key: source-v1-{{ .Branch }}-{{ .Revision }}