adding logg
diff --git a/.travis.yml b/.travis.yml
index e5868b7..c598d42 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -62,7 +62,8 @@
   - cat travis/wayang.properties
   - rm -rf /home/travis/build/apache/incubator-wayang/target/rat.txt || echo "file doesn't exist"
   - rm -rf result.log || echo "file doesn't exist"
-  - mvn_opts=("-Dorg.slf4j.simpleLogger.defaultLogLevel=error" "-Dwayang.configuration=file://$(pwd)/travis/wayang.properties" "-Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=error" "-Dlog4j.rootLogger=ERROR")
+  - export LOG_LEVEL=info
+  - mvn_opts=("-Dorg.slf4j.simpleLogger.defaultLogLevel=${LOG_LEVEL}" "-Dwayang.configuration=file://$(pwd)/travis/wayang.properties" "-Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=${LOG_LEVEL}" "-Dlog4j.rootLogger=${LOG_LEVEL}")
 #  - chmod +x ./docs/script/cibuild
 script:
   #- jdk_switcher use openjdk8