Lower memory and suppressed sonar warning plus separate build

Jenkinsfile

@@ -43,6 +43,7 @@ node('ubuntu') {
     timeout(time: 1, unit: 'HOURS') {
       withEnv(["Path+JDK=$JAVA_JDK_17/bin","JAVA_HOME=$JAVA_JDK_17"]) {
         withCredentials([string(credentialsId: 'SONARCLOUD_TOKEN', variable: 'SONAR_TOKEN')]) {
+          sh './gradlew --no-parallel --no-daemon'
           if ( env.BRANCH_NAME.startsWith("PR-") ) {
             sh './gradlew --no-parallel --no-daemon jacocoAggregateTestReport sonar -PenableJacoco -Porg.sonarqube.version=4.4.1.3373 -Dsonar.pullrequest.branch=${CHANGE_BRANCH} -Dsonar.pullrequest.base=${CHANGE_TARGET} -Dsonar.pullrequest.key=${CHANGE_ID} -Dsonar.login=${SONAR_TOKEN}'
           } else {

gradle.properties

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-org.gradle.jvmargs=-XX:+UseG1GC -Xmx1536m -XX:MaxMetaspaceSize=768m
+org.gradle.jvmargs=-XX:+UseG1GC -Xmx512m -XX:MaxMetaspaceSize=512m
 org.gradle.parallel=true
 # Build cache can be disabled with --no-build-cache option
 org.gradle.caching=true
@@ -173,6 +173,7 @@ xalan.version=2.7.1
 xercesImpl.version=2.9.1
 
 # sonar properties
+systemProp.sonar.gradle.skipCompile=true
+systemProp.sonar.host.url=https://sonarcloud.io
 systemProp.sonar.organization=apache
 systemProp.sonar.projectKey=apache_calcite
-systemProp.sonar.host.url=https://sonarcloud.io