[Nemo-402] Fix guava version conflict (#228)
JIRA: [NEMO-402: Broken guava version conflicts cause ERROR: Trying to remove a RunningJob that is unknown ](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-###)
**Major changes:**
- guava version 19.0 -> 20.0
diff --git a/pom.xml b/pom.xml
index 1d7b43c..e0187c7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,7 +54,7 @@
<hadoop.version>2.7.2</hadoop.version>
<log4j.configuration>file://log4j.properties</log4j.configuration>
<netty.version>4.1.16.Final</netty.version>
- <guava.version>19.0</guava.version>
+ <guava.version>20.0</guava.version>
<grpc.version>1.7.0</grpc.version>
<jackson.version>2.8.8</jackson.version>
<netlib.version>1.1.2</netlib.version>
