Upgrade Hadoop version.
diff --git a/pom.xml b/pom.xml
index fe02804..d33954c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -64,7 +64,7 @@
<maven-jxr-plugin.version>2.5</maven-jxr-plugin.version>
<mockito.version>2.7.22</mockito.version>
<netty.version>4.0.52.Final</netty.version>
- <hadoop.version>3.0.3</hadoop.version>
+ <hadoop.version>3.1.1</hadoop.version>
<bouncycastle.version>1.60</bouncycastle.version>
<jersey.container.version>2.17</jersey.container.version>
<jersey.version>1.19</jersey.version>