let's see wether the test fails in travis as well

travis.sh

@@ -23,6 +23,7 @@ case "${1:?''}" in
     run "./gradlew spotbugsJavaPoet spotbugsMain pmdJavaPoet pmdMain -Dspotbugs -Dpmd --console plain"
     run "sh -c 'cd examples/stats-metrics && ./gradlew test --console plain'"
     run "sh -c 'cd examples/write-behind-rxjava && mvn test'"
+    run "sh -c 'cd examples/coalescing-bulkloader && mvn test'"
     ;;
   tests)
     run "./gradlew check --console plain"