Merge pull request #34 from bianhq/master

[HOTFIX]: remove or upgrade insecure packages from dependencies.

pom.xml

@@ -61,7 +61,6 @@
         <dep.hive.storage.api.version>2.4.0</dep.hive.storage.api.version>
         <dep.orc.version>1.3.4</dep.orc.version>
         <dep.presto.version>0.192</dep.presto.version>
-        <dep.zookeeper.version>3.4.6</dep.zookeeper.version>
         <dep.airlift.version>0.161</dep.airlift.version>
         <dep.airlift.slice.version>0.32</dep.airlift.slice.version>
         <dep.airlift.units.version>1.0</dep.airlift.units.version>
@@ -71,7 +70,7 @@
         <dep.protobuf.version>3.6.1</dep.protobuf.version>
         <dep.kryo.version>4.0.2</dep.kryo.version>
         <dep.kryo-serializers.version>0.42</dep.kryo-serializers.version>
-        <dep.jackson.version>2.8.1</dep.jackson.version>
+        <dep.jackson.version>2.9.9.2</dep.jackson.version>
         <dep.google.inject.version>4.0</dep.google.inject.version>
         <dep.google.jrs305.version>3.0.0</dep.google.jrs305.version>
         <dep.javax.inject.version>1</dep.javax.inject.version>
@@ -116,13 +115,6 @@
                 <version>${project.version}</version>
             </dependency>
 
-            <!-- zookeeper -->
-            <dependency>
-                <groupId>org.apache.zookeeper</groupId>
-                <artifactId>zookeeper</artifactId>
-                <version>${dep.zookeeper.version}</version>
-            </dependency>
-
             <!-- prometheus -->
             <dependency>
                 <groupId>io.prometheus</groupId>