diff --git a/java/build-jar-multiplatform.sh b/java/build-jar-multiplatform.sh
index e21eb0a98..97bbfc91f 100755
--- a/java/build-jar-multiplatform.sh
+++ b/java/build-jar-multiplatform.sh
@@ -68,10 +68,12 @@ build_jars_darwin() {
 }
 
 build_jars_multiplatform() {
-  if [[ "${TRAVIS_REPO_SLUG-}" != "ray-project/ray" || "${TRAVIS_PULL_REQUEST-}" != "false" ]]; then
-    echo "Skip build multiplatform jars when this build is from a pull request or
-      not a build for commit in ray-project/ray."
-    return
+  if [ "${TRAVIS-}" = true ]; then
+    if [[ "${TRAVIS_REPO_SLUG-}" != "ray-project/ray" || "${TRAVIS_PULL_REQUEST-}" != "false" ]]; then
+      echo "Skip build multiplatform jars when this build is from a pull request or
+        not a build for commit in ray-project/ray."
+      return
+    fi
   fi
   download_jars "ray-runtime-$version.jar" "streaming-runtime-$version.jar"
   prepare_native
@@ -140,10 +142,10 @@ deploy_jars() {
     fi
   fi
   echo "Start deploying jars"
-  cd "$WORKSPACE_DIR"/java
-  mvn -T16 deploy -Dmaven.test.skip=true -Dcheckstyle.skip
-  cd "$WORKSPACE_DIR"/streaming/java
-  mvn -T16 deploy -Dmaven.test.skip=true -Dcheckstyle.skip
+  cd "$WORKSPACE_DIR/java"
+  mvn -T16 deploy -Dmaven.test.skip=true -Dcheckstyle.skip -Prelease
+  cd "$WORKSPACE_DIR/streaming/java"
+  mvn -T16 deploy -Dmaven.test.skip=true -Dcheckstyle.skip -Prelease
   echo "Finished deploying jars"
 }
 
diff --git a/java/pom.xml b/java/pom.xml
index 60c2bffec..99aa6d943 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -1,13 +1,41 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xmlns="http://maven.apache.org/POM/4.0.0"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
-  <packaging>pom</packaging>
-
   <groupId>io.ray</groupId>
   <artifactId>ray-superpom</artifactId>
   <version>0.1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+  <name>Ray Project Parent POM</name>
+  <description>A fast and simple framework for building and running distributed applications.
+  </description>
+  <url>https://github.com/ray-project/ray</url>
+
+  <licenses>
+    <license>
+      <name>The Apache License, Version 2.0</name>
+      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+    </license>
+  </licenses>
+
+  <scm>
+    <url>https://github.com/ray-project/ray</url>
+    <connection>git@github.com:ray-project/ray.git</connection>
+    <developerConnection>scm:git:ssh://github.com:ray-project/ray.git</developerConnection>
+  </scm>
+
+  <distributionManagement>
+    <snapshotRepository>
+      <id>ossrh</id>
+      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+    </snapshotRepository>
+    <repository>
+      <id>ossrh</id>
+      <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+    </repository>
+  </distributionManagement>
+
   <modules>
     <module>api</module>
     <module>runtime</module>
@@ -21,10 +49,32 @@
     <projetct.version>0.1-SNAPSHOT</projetct.version>
   </properties>
 
-  <dependencyManagement>
-    <dependencies>
-    </dependencies>
-  </dependencyManagement>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <activation>
+        <property>
+          <name>release</name>
+          <value>true</value>
+        </property>
+      </activation>
+      <properties>
+        <output.directory>${basedir}</output.directory>
+      </properties>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-gpg-plugin</artifactId>
+          </plugin>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-javadoc-plugin</artifactId>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
 
   <build>
     <pluginManagement>
@@ -49,13 +99,28 @@
           <executions>
             <execution>
               <id>attach-sources</id>
-              <phase>deploy</phase>
               <goals>
                 <goal>jar</goal>
               </goals>
             </execution>
           </executions>
         </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-javadoc-plugin</artifactId>
+          <version>2.10.4</version>
+          <executions>
+            <execution>
+              <id>attach-javadocs</id>
+              <goals>
+                <goal>jar</goal>
+              </goals>
+            </execution>
+          </executions>
+          <configuration>
+            <additionalparam>-Xdoclint:none</additionalparam>
+          </configuration>
+        </plugin>
 
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
@@ -79,21 +144,6 @@
           <artifactId>maven-assembly-plugin</artifactId>
           <version>2.2</version>
         </plugin>
-
-        <plugin>
-          <groupId>org.apache.maven.plugins</groupId>
-          <artifactId>maven-javadoc-plugin</artifactId>
-          <version>2.10.4</version>
-          <executions>
-            <execution>
-              <id>attach-javadocs</id>
-              <phase>deploy</phase>
-              <goals>
-                <goal>jar</goal>
-              </goals>
-            </execution>
-          </executions>
-        </plugin>
         <plugin>
           <artifactId>maven-deploy-plugin</artifactId>
           <version>2.8.2</version>
@@ -132,6 +182,26 @@
             <linkXRef>false</linkXRef>
           </configuration>
         </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-gpg-plugin</artifactId>
+          <version>1.6</version>
+          <executions>
+            <execution>
+              <id>sign-artifacts</id>
+              <goals>
+                <goal>sign</goal>
+              </goals>
+              <configuration>
+                <!-- Prevent `gpg` from using pinentry programs -->
+                <gpgArguments>
+                  <arg>--pinentry-mode</arg>
+                  <arg>loopback</arg>
+                </gpgArguments>
+              </configuration>
+            </execution>
+          </executions>
+        </plugin>
       </plugins>
     </pluginManagement>
     <plugins>
@@ -139,6 +209,10 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-source-plugin</artifactId>
+      </plugin>
     </plugins>
   </build>
 
diff --git a/java/runtime/pom.xml b/java/runtime/pom.xml
index adb7153ac..61ae25c51 100644
--- a/java/runtime/pom.xml
+++ b/java/runtime/pom.xml
@@ -13,8 +13,25 @@
   <artifactId>ray-runtime</artifactId>
   <name>ray runtime</name>
   <description>ray runtime implementation</description>
-
   <packaging>jar</packaging>
+  <properties>
+    <output.directory>${basedir}/../../build/java</output.directory>
+  </properties>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <activation>
+        <property>
+          <name>release</name>
+          <value>true</value>
+        </property>
+        <activeByDefault>false</activeByDefault>
+      </activation>
+      <properties>
+        <output.directory>${basedir}</output.directory>
+      </properties>
+    </profile>
+  </profiles>
 
   <dependencies>
     <dependency>
@@ -139,7 +156,7 @@
         <artifactId>maven-jar-plugin</artifactId>
         <version>2.3.1</version>
         <configuration>
-          <outputDirectory>${basedir}/../../build/java</outputDirectory>
+          <outputDirectory>${output.directory}</outputDirectory>
         </configuration>
       </plugin>
     </plugins>
diff --git a/java/runtime/pom_template.xml b/java/runtime/pom_template.xml
index ec09ca5c4..55a22c59c 100644
--- a/java/runtime/pom_template.xml
+++ b/java/runtime/pom_template.xml
@@ -13,8 +13,25 @@
   <artifactId>ray-runtime</artifactId>
   <name>ray runtime</name>
   <description>ray runtime implementation</description>
-
   <packaging>jar</packaging>
+  <properties>
+    <output.directory>${basedir}/../../build/java</output.directory>
+  </properties>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <activation>
+        <property>
+          <name>release</name>
+          <value>true</value>
+        </property>
+        <activeByDefault>false</activeByDefault>
+      </activation>
+      <properties>
+        <output.directory>${basedir}</output.directory>
+      </properties>
+    </profile>
+  </profiles>
 
   <dependencies>
     <dependency>
@@ -60,7 +77,7 @@
         <artifactId>maven-jar-plugin</artifactId>
         <version>2.3.1</version>
         <configuration>
-          <outputDirectory>${basedir}/../../build/java</outputDirectory>
+          <outputDirectory>${output.directory}</outputDirectory>
         </configuration>
       </plugin>
     </plugins>
diff --git a/java/test/pom.xml b/java/test/pom.xml
index e3c6e8a46..9cd773a05 100644
--- a/java/test/pom.xml
+++ b/java/test/pom.xml
@@ -16,6 +16,10 @@
 
   <packaging>jar</packaging>
 
+  <properties>
+    <maven.deploy.skip>true</maven.deploy.skip>
+  </properties>
+
   <dependencies>
     <dependency>
       <groupId>io.ray</groupId>
diff --git a/java/test/pom_template.xml b/java/test/pom_template.xml
index 01db3d5a8..c5a074ad0 100644
--- a/java/test/pom_template.xml
+++ b/java/test/pom_template.xml
@@ -16,6 +16,10 @@
 
   <packaging>jar</packaging>
 
+  <properties>
+    <maven.deploy.skip>true</maven.deploy.skip>
+  </properties>
+
   <dependencies>
     <dependency>
       <groupId>io.ray</groupId>
diff --git a/java/tutorial/pom.xml b/java/tutorial/pom.xml
index cecad8d8a..a056d3d57 100644
--- a/java/tutorial/pom.xml
+++ b/java/tutorial/pom.xml
@@ -18,6 +18,10 @@
 
   <packaging>jar</packaging>
 
+  <properties>
+    <maven.deploy.skip>true</maven.deploy.skip>
+  </properties>
+
   <dependencies>
     <dependency>
       <groupId>io.ray</groupId>
diff --git a/java/tutorial/pom_template.xml b/java/tutorial/pom_template.xml
index a3c8e9ff6..55917ab6c 100644
--- a/java/tutorial/pom_template.xml
+++ b/java/tutorial/pom_template.xml
@@ -18,6 +18,10 @@
 
   <packaging>jar</packaging>
 
+  <properties>
+    <maven.deploy.skip>true</maven.deploy.skip>
+  </properties>
+
   <dependencies>
     <dependency>
       <groupId>io.ray</groupId>
diff --git a/streaming/java/pom.xml b/streaming/java/pom.xml
index 222093041..9fea52c93 100644
--- a/streaming/java/pom.xml
+++ b/streaming/java/pom.xml
@@ -1,167 +1,241 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 
-
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-    <packaging>pom</packaging>
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>io.ray</groupId>
+  <artifactId>ray-streaming</artifactId>
+  <version>0.1-SNAPSHOT</version>
+  <packaging>pom</packaging>
+  <name>Ray Project Streaming Parent POM</name>
+  <description>A streaming framework built on ray</description>
+  <url>https://github.com/ray-project/ray</url>
 
-    <groupId>io.ray</groupId>
-    <artifactId>ray-streaming</artifactId>
-    <version>0.1-SNAPSHOT</version>
-    <name>ray streaming</name>
-    <description>ray streaming</description>
-    <modules>
-        <module>streaming-api</module>
-        <module>streaming-runtime</module>
-        <module>streaming-state</module>
-    </modules>
+  <licenses>
+    <license>
+      <name>The Apache License, Version 2.0</name>
+      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+    </license>
+  </licenses>
 
-    <properties>
-        <java.version>1.8</java.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <projetct.version>0.1-SNAPSHOT</projetct.version>
-        <slf4j.version>1.7.25</slf4j.version>
-        <log4j.version>1.2.17</log4j.version>
-        <testng.version>6.9.10</testng.version>
-        <mockito.version>1.10.19</mockito.version>
-        <guava.version>27.0.1-jre</guava.version>
-        <fst.version>2.57</fst.version>
-    </properties>
+  <scm>
+    <url>https://github.com/ray-project/ray</url>
+    <connection>git@github.com:ray-project/ray.git</connection>
+    <developerConnection>scm:git:ssh://github.com:ray-project/ray.git</developerConnection>
+  </scm>
 
-    <dependencies>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-api</artifactId>
-            <version>${slf4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-log4j12</artifactId>
-            <version>${slf4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.testng</groupId>
-            <artifactId>testng</artifactId>
-            <version>${testng.version}</version>
-        </dependency>
-    </dependencies>
+  <distributionManagement>
+    <snapshotRepository>
+      <id>ossrh</id>
+      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+    </snapshotRepository>
+    <repository>
+      <id>ossrh</id>
+      <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+    </repository>
+  </distributionManagement>
 
-    <build>
-        <pluginManagement>
-            <plugins>
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-compiler-plugin</artifactId>
-                    <version>3.6.1</version>
-                    <configuration>
-                        <source>${java.version}</source>
-                        <target>${java.version}</target>
-                        <encoding>${project.build.sourceEncoding}</encoding>
-                        <compilerArgument>-parameters</compilerArgument>
-                        <testCompilerArgument>-parameters</testCompilerArgument>
-                    </configuration>
-                </plugin>
+  <modules>
+    <module>streaming-api</module>
+    <module>streaming-runtime</module>
+    <module>streaming-state</module>
+  </modules>
 
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-source-plugin</artifactId>
-                    <version>3.0.1</version>
-                    <executions>
-                        <execution>
-                            <id>attach-sources</id>
-                            <phase>deploy</phase>
-                            <goals>
-                                <goal>jar</goal>
-                            </goals>
-                        </execution>
-                    </executions>
-                </plugin>
+  <properties>
+    <java.version>1.8</java.version>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <projetct.version>0.1-SNAPSHOT</projetct.version>
+    <slf4j.version>1.7.25</slf4j.version>
+    <log4j.version>1.2.17</log4j.version>
+    <testng.version>6.9.10</testng.version>
+    <mockito.version>1.10.19</mockito.version>
+    <guava.version>27.0.1-jre</guava.version>
+    <fst.version>2.57</fst.version>
+  </properties>
 
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-dependency-plugin</artifactId>
-                    <version>2.10</version>
-                </plugin>
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-clean-plugin</artifactId>
-                    <version>3.0.0</version>
-                </plugin>
-
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-assembly-plugin</artifactId>
-                    <version>2.2</version>
-                </plugin>
-
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-javadoc-plugin</artifactId>
-                    <version>2.10.4</version>
-                    <executions>
-                        <execution>
-                            <id>attach-javadocs</id>
-                            <phase>deploy</phase>
-                            <goals>
-                                <goal>jar</goal>
-                            </goals>
-                        </execution>
-                    </executions>
-                </plugin>
-                <plugin>
-                    <artifactId>maven-deploy-plugin</artifactId>
-                    <version>2.8.2</version>
-                    <executions>
-                        <execution>
-                            <id>deploy</id>
-                            <phase>deploy</phase>
-                            <goals>
-                                <goal>deploy</goal>
-                            </goals>
-                        </execution>
-                    </executions>
-                </plugin>
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-checkstyle-plugin</artifactId>
-                    <version>3.0.0</version>
-                    <executions>
-                        <execution>
-                            <id>validate</id>
-                            <phase>validate</phase>
-                            <goals>
-                                <goal>check</goal>
-                            </goals>
-                        </execution>
-                    </executions>
-                    <configuration>
-                        <configLocation>../../java/checkstyle.xml</configLocation>
-                        <suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
-                        <encoding>UTF-8</encoding>
-                        <consoleOutput>true</consoleOutput>
-                        <failsOnError>true</failsOnError>
-                        <failOnViolation>true</failOnViolation>
-                        <violationSeverity>warning</violationSeverity>
-                        <outputFile>${project.build.directory}/checkstyle-errors.xml</outputFile>
-                        <linkXRef>false</linkXRef>
-                    </configuration>
-                </plugin>
-            </plugins>
-        </pluginManagement>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <activation>
+        <property>
+          <name>release</name>
+          <value>true</value>
+        </property>
+      </activation>
+      <properties>
+        <output.directory>${basedir}</output.directory>
+      </properties>
+      <build>
         <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-checkstyle-plugin</artifactId>
-            </plugin>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-gpg-plugin</artifactId>
+          </plugin>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-javadoc-plugin</artifactId>
+          </plugin>
         </plugins>
-    </build>
+      </build>
+    </profile>
+  </profiles>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
+      <version>${guava.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
+      <version>${slf4j.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-log4j12</artifactId>
+      <version>${slf4j.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.testng</groupId>
+      <artifactId>testng</artifactId>
+      <version>${testng.version}</version>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.6.1</version>
+          <configuration>
+            <source>${java.version}</source>
+            <target>${java.version}</target>
+            <encoding>${project.build.sourceEncoding}</encoding>
+            <compilerArgument>-parameters</compilerArgument>
+            <testCompilerArgument>-parameters</testCompilerArgument>
+          </configuration>
+        </plugin>
+
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-source-plugin</artifactId>
+          <version>3.0.1</version>
+          <executions>
+            <execution>
+              <id>attach-sources</id>
+              <goals>
+                <goal>jar</goal>
+              </goals>
+            </execution>
+          </executions>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-javadoc-plugin</artifactId>
+          <version>2.10.4</version>
+          <executions>
+            <execution>
+              <id>attach-javadocs</id>
+              <goals>
+                <goal>jar</goal>
+              </goals>
+            </execution>
+          </executions>
+          <configuration>
+            <additionalparam>-Xdoclint:none</additionalparam>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-dependency-plugin</artifactId>
+          <version>2.10</version>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-clean-plugin</artifactId>
+          <version>3.0.0</version>
+        </plugin>
+
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-assembly-plugin</artifactId>
+          <version>2.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-deploy-plugin</artifactId>
+          <version>2.8.2</version>
+          <executions>
+            <execution>
+              <id>deploy</id>
+              <phase>deploy</phase>
+              <goals>
+                <goal>deploy</goal>
+              </goals>
+            </execution>
+          </executions>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-checkstyle-plugin</artifactId>
+          <version>3.0.0</version>
+          <executions>
+            <execution>
+              <id>validate</id>
+              <phase>validate</phase>
+              <goals>
+                <goal>check</goal>
+              </goals>
+            </execution>
+          </executions>
+          <configuration>
+            <configLocation>../../java/checkstyle.xml</configLocation>
+            <suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
+            <encoding>UTF-8</encoding>
+            <consoleOutput>true</consoleOutput>
+            <failsOnError>true</failsOnError>
+            <failOnViolation>true</failOnViolation>
+            <violationSeverity>warning</violationSeverity>
+            <outputFile>${project.build.directory}/checkstyle-errors.xml</outputFile>
+            <linkXRef>false</linkXRef>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-gpg-plugin</artifactId>
+          <version>1.6</version>
+          <executions>
+            <execution>
+              <id>sign-artifacts</id>
+              <goals>
+                <goal>sign</goal>
+              </goals>
+              <configuration>
+                <!-- Prevent `gpg` from using pinentry programs -->
+                <gpgArguments>
+                  <arg>--pinentry-mode</arg>
+                  <arg>loopback</arg>
+                </gpgArguments>
+              </configuration>
+            </execution>
+          </executions>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-checkstyle-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-source-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
 
 </project>
diff --git a/streaming/java/streaming-api/pom.xml b/streaming/java/streaming-api/pom.xml
index 4e100fefd..0f71d8b77 100644
--- a/streaming/java/streaming-api/pom.xml
+++ b/streaming/java/streaming-api/pom.xml
@@ -3,36 +3,36 @@
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-    <parent>
-        <artifactId>ray-streaming</artifactId>
-        <groupId>io.ray</groupId>
-        <version>0.1-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <artifactId>ray-streaming</artifactId>
+    <groupId>io.ray</groupId>
+    <version>0.1-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>streaming-api</artifactId>
-    <name>ray streaming api</name>
-    <description>ray streaming api</description>
+  <artifactId>streaming-api</artifactId>
+  <name>ray streaming api</name>
+  <description>ray streaming api</description>
 
-    <packaging>jar</packaging>
+  <packaging>jar</packaging>
 
-    <dependencies>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>ray-api</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>ray-runtime</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.ray</groupId>
-            <artifactId>streaming-state</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
+  <dependencies>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-runtime</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>streaming-state</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
   <groupId>com.google.code.findbugs</groupId>
   <artifactId>jsr305</artifactId>
   <version>3.0.2</version>
@@ -67,5 +67,5 @@
   <artifactId>testng</artifactId>
   <version>6.9.10</version>
 </dependency>
-    </dependencies>
+  </dependencies>
 </project>
diff --git a/streaming/java/streaming-api/pom_template.xml b/streaming/java/streaming-api/pom_template.xml
index 9b94fb278..fa5a4a792 100644
--- a/streaming/java/streaming-api/pom_template.xml
+++ b/streaming/java/streaming-api/pom_template.xml
@@ -3,35 +3,35 @@
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-    <parent>
-        <artifactId>ray-streaming</artifactId>
-        <groupId>io.ray</groupId>
-        <version>0.1-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <artifactId>ray-streaming</artifactId>
+    <groupId>io.ray</groupId>
+    <version>0.1-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>streaming-api</artifactId>
-    <name>ray streaming api</name>
-    <description>ray streaming api</description>
+  <artifactId>streaming-api</artifactId>
+  <name>ray streaming api</name>
+  <description>ray streaming api</description>
 
-    <packaging>jar</packaging>
+  <packaging>jar</packaging>
 
-    <dependencies>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>ray-api</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>ray-runtime</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.ray</groupId>
-            <artifactId>streaming-state</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        {generated_bzl_deps}
-    </dependencies>
+  <dependencies>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-runtime</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>streaming-state</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    {generated_bzl_deps}
+  </dependencies>
 </project>
diff --git a/streaming/java/streaming-runtime/pom.xml b/streaming/java/streaming-runtime/pom.xml
index 19633c4be..1a5e57d8e 100644
--- a/streaming/java/streaming-runtime/pom.xml
+++ b/streaming/java/streaming-runtime/pom.xml
@@ -3,35 +3,53 @@
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-    <parent>
-        <artifactId>ray-streaming</artifactId>
-        <groupId>io.ray</groupId>
-        <version>0.1-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <artifactId>ray-streaming</artifactId>
+    <groupId>io.ray</groupId>
+    <version>0.1-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>streaming-runtime</artifactId>
-    <name>ray streaming runtime</name>
-    <description>ray streaming runtime</description>
-    <packaging>jar</packaging>
+  <artifactId>streaming-runtime</artifactId>
+  <name>ray streaming runtime</name>
+  <description>ray streaming runtime</description>
+  <packaging>jar</packaging>
+  <properties>
+    <output.directory>${basedir}/../../build/java</output.directory>
+  </properties>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <activation>
+        <property>
+          <name>release</name>
+          <value>true</value>
+        </property>
+        <activeByDefault>false</activeByDefault>
+      </activation>
+      <properties>
+        <output.directory>${basedir}</output.directory>
+      </properties>
+    </profile>
+  </profiles>
 
-    <dependencies>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>ray-api</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>ray-runtime</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>streaming-api</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
+  <dependencies>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-runtime</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>streaming-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
   <groupId>com.github.davidmoten</groupId>
   <artifactId>flatbuffers-java</artifactId>
   <version>1.9.0.1</version>
@@ -101,46 +119,46 @@
   <artifactId>testng</artifactId>
   <version>6.9.10</version>
 </dependency>
-    </dependencies>
+  </dependencies>
 
-    <build>
-        <resources>
-            <resource>
-                <directory>src/main/resources</directory>
-            </resource>
-            <resource>
-                <directory>native_dependencies</directory>
-            </resource>
-        </resources>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-dependency-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <id>copy-dependencies-to-build</id>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>copy-dependencies</goal>
-                        </goals>
-                        <configuration>
-                            <outputDirectory>${basedir}/../../build/java</outputDirectory>
-                            <overWriteReleases>false</overWriteReleases>
-                            <overWriteSnapshots>false</overWriteSnapshots>
-                            <overWriteIfNewer>true</overWriteIfNewer>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
+  <build>
+    <resources>
+      <resource>
+        <directory>src/main/resources</directory>
+      </resource>
+      <resource>
+        <directory>native_dependencies</directory>
+      </resource>
+    </resources>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>copy-dependencies-to-build</id>
+            <phase>package</phase>
+            <goals>
+              <goal>copy-dependencies</goal>
+            </goals>
+            <configuration>
+              <outputDirectory>${basedir}/../../build/java</outputDirectory>
+              <overWriteReleases>false</overWriteReleases>
+              <overWriteSnapshots>false</overWriteSnapshots>
+              <overWriteIfNewer>true</overWriteIfNewer>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
 
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <version>2.3.1</version>
-                <configuration>
-                    <outputDirectory>${basedir}/../../build/java</outputDirectory>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>2.3.1</version>
+        <configuration>
+          <outputDirectory>${output.directory}</outputDirectory>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
 </project>
diff --git a/streaming/java/streaming-runtime/pom_template.xml b/streaming/java/streaming-runtime/pom_template.xml
index 832fd72bd..88dd84136 100644
--- a/streaming/java/streaming-runtime/pom_template.xml
+++ b/streaming/java/streaming-runtime/pom_template.xml
@@ -3,75 +3,93 @@
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-    <parent>
-        <artifactId>ray-streaming</artifactId>
-        <groupId>io.ray</groupId>
-        <version>0.1-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <artifactId>ray-streaming</artifactId>
+    <groupId>io.ray</groupId>
+    <version>0.1-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>streaming-runtime</artifactId>
-    <name>ray streaming runtime</name>
-    <description>ray streaming runtime</description>
-    <packaging>jar</packaging>
+  <artifactId>streaming-runtime</artifactId>
+  <name>ray streaming runtime</name>
+  <description>ray streaming runtime</description>
+  <packaging>jar</packaging>
+  <properties>
+    <output.directory>${basedir}/../../build/java</output.directory>
+  </properties>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <activation>
+        <property>
+          <name>release</name>
+          <value>true</value>
+        </property>
+        <activeByDefault>false</activeByDefault>
+      </activation>
+      <properties>
+        <output.directory>${basedir}</output.directory>
+      </properties>
+    </profile>
+  </profiles>
 
-    <dependencies>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>ray-api</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>ray-runtime</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.ray</groupId>
-            <artifactId>streaming-api</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        {generated_bzl_deps}
-    </dependencies>
+  <dependencies>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>ray-runtime</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.ray</groupId>
+      <artifactId>streaming-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    {generated_bzl_deps}
+  </dependencies>
 
-    <build>
-        <resources>
-            <resource>
-                <directory>src/main/resources</directory>
-            </resource>
-            <resource>
-                <directory>native_dependencies</directory>
-            </resource>
-        </resources>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-dependency-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <id>copy-dependencies-to-build</id>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>copy-dependencies</goal>
-                        </goals>
-                        <configuration>
-                            <outputDirectory>${basedir}/../../build/java</outputDirectory>
-                            <overWriteReleases>false</overWriteReleases>
-                            <overWriteSnapshots>false</overWriteSnapshots>
-                            <overWriteIfNewer>true</overWriteIfNewer>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
+  <build>
+    <resources>
+      <resource>
+        <directory>src/main/resources</directory>
+      </resource>
+      <resource>
+        <directory>native_dependencies</directory>
+      </resource>
+    </resources>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>copy-dependencies-to-build</id>
+            <phase>package</phase>
+            <goals>
+              <goal>copy-dependencies</goal>
+            </goals>
+            <configuration>
+              <outputDirectory>${basedir}/../../build/java</outputDirectory>
+              <overWriteReleases>false</overWriteReleases>
+              <overWriteSnapshots>false</overWriteSnapshots>
+              <overWriteIfNewer>true</overWriteIfNewer>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
 
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <version>2.3.1</version>
-                <configuration>
-                    <outputDirectory>${basedir}/../../build/java</outputDirectory>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>2.3.1</version>
+        <configuration>
+          <outputDirectory>${output.directory}</outputDirectory>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
 </project>
diff --git a/streaming/java/streaming-state/pom.xml b/streaming/java/streaming-state/pom.xml
index 77e3de57b..c8a09945d 100644
--- a/streaming/java/streaming-state/pom.xml
+++ b/streaming/java/streaming-state/pom.xml
@@ -9,8 +9,9 @@
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
-    <groupId>org.ray</groupId>
     <artifactId>streaming-state</artifactId>
+    <name>ray streaming state</name>
+    <description>ray streaming state</description>
 
     <dependencyManagement>
         <dependencies>
diff --git a/streaming/java/streaming-state/pom_template.xml b/streaming/java/streaming-state/pom_template.xml
index adaf7908e..c3d1b9eb1 100644
--- a/streaming/java/streaming-state/pom_template.xml
+++ b/streaming/java/streaming-state/pom_template.xml
@@ -3,20 +3,20 @@
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-    <parent>
-        <artifactId>ray-streaming</artifactId>
-        <groupId>io.ray</groupId>
-        <version>0.1-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <artifactId>ray-streaming</artifactId>
+    <groupId>io.ray</groupId>
+    <version>0.1-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
 
-    <artifactId>streaming-state</artifactId>
-    <name>ray streaming state</name>
-    <description>ray streaming state</description>
-    <packaging>jar</packaging>
+  <artifactId>streaming-state</artifactId>
+  <name>ray streaming state</name>
+  <description>ray streaming state</description>
+  <packaging>jar</packaging>
 
-    <dependencies>
-        {generated_bzl_deps}
-    </dependencies>
+  <dependencies>
+    {generated_bzl_deps}
+  </dependencies>
 
 </project>