diff --git a/.travis.yml b/.travis.yml
index 1b2214fff34d..3fa9735b5f6d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,12 +1,24 @@
+sudo : required
 language: java
 
+addons:
+  apt:
+    packages:
+      - openjdk-6-jdk
+
 jdk:
- - oraclejdk7
+ - openjdk7
 
-env: JAVA_6_HOME=/usr/lib/jvm/java-6-openjdk-amd64 JAVA_7_HOME=/usr/lib/jvm/java-7-oracle JAVA_8_HOME=/usr/lib/jvm/java-8-oracle
+env: JAVA_6_HOME=/usr/lib/jvm/java-6-openjdk-amd64 JAVA_7_HOME=/usr/lib/jvm/java-7-openjdk-amd64 JAVA_8_HOME=/usr/lib/jvm/java-8-oracle
 
 install:
  - set -o pipefail
+ - ls -al $JAVA_6_HOME
+ - ls -al $JAVA_7_HOME
+ - ls -al $JAVA_8_HOME
+ - $JAVA_6_HOME/bin/java -version
+ - $JAVA_7_HOME/bin/java -version
+ - $JAVA_8_HOME/bin/java -version
  - mvn install -DskipTests=true -Dmaven.javadoc.skip=true -B -V | grep -Fv '[copy'
 
 script: mvn clover2:setup test -Ptest clover2:aggregate clover2:clover -e | grep -Fv 'DEBUG' | grep -Fv '[copy'
@@ -15,4 +27,4 @@ after_success:
  - bash <(curl -s https://codecov.io/bash)
 
 dist:
- - precise
\ No newline at end of file
+ - trusty
\ No newline at end of file
diff --git a/profiler/src/test/java/com/navercorp/pinpoint/profiler/receiver/service/ActiveThreadLightDumpServiceTest.java b/profiler/src/test/java/com/navercorp/pinpoint/profiler/receiver/service/ActiveThreadLightDumpServiceTest.java
index 6cc7b85ae13c..37ac5b5270a7 100644
--- a/profiler/src/test/java/com/navercorp/pinpoint/profiler/receiver/service/ActiveThreadLightDumpServiceTest.java
+++ b/profiler/src/test/java/com/navercorp/pinpoint/profiler/receiver/service/ActiveThreadLightDumpServiceTest.java
@@ -281,4 +281,10 @@ public void close() {
 
     }
 
+    @Test
+    public void tet() {
+//        382899065050
+        System.out.println("" + TimeUnit.NANOSECONDS.toMinutes(382899065050L));
+    }
+
 }