[maven-release-plugin] prepare release druid-0.8.1
diff --git a/aws-common/pom.xml b/aws-common/pom.xml
index 54dce6a..12cf433 100644
--- a/aws-common/pom.xml
+++ b/aws-common/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index 0cfaf02..d3cd3ba 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -27,7 +27,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.8.1-rc4-SNAPSHOT</version>
+    <version>0.8.1</version>
   </parent>
 
   <prerequisites>
diff --git a/common/pom.xml b/common/pom.xml
index 330bbcb..05ae227 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/distribution/pom.xml b/distribution/pom.xml
index 808ab60..c2134b5 100644
--- a/distribution/pom.xml
+++ b/distribution/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <artifactId>druid</artifactId>
         <groupId>io.druid</groupId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/examples/pom.xml b/examples/pom.xml
index 93d4bc1..c1cbdc2 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/extensions-distribution/pom.xml b/extensions-distribution/pom.xml
index 3cddb81..35c24bb 100644
--- a/extensions-distribution/pom.xml
+++ b/extensions-distribution/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <artifactId>druid</artifactId>
         <groupId>io.druid</groupId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/extensions/azure-extensions/pom.xml b/extensions/azure-extensions/pom.xml
index dfe521a..7ea5c28 100644
--- a/extensions/azure-extensions/pom.xml
+++ b/extensions/azure-extensions/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions/cassandra-storage/pom.xml b/extensions/cassandra-storage/pom.xml
index c82b862..033d8ff 100644
--- a/extensions/cassandra-storage/pom.xml
+++ b/extensions/cassandra-storage/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions/hdfs-storage/pom.xml b/extensions/hdfs-storage/pom.xml
index 3ae6512..a828579 100644
--- a/extensions/hdfs-storage/pom.xml
+++ b/extensions/hdfs-storage/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions/histogram/pom.xml b/extensions/histogram/pom.xml
index 446f89c..b6c3e9a 100644
--- a/extensions/histogram/pom.xml
+++ b/extensions/histogram/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions/kafka-eight/pom.xml b/extensions/kafka-eight/pom.xml
index ee04d24..6bc802e 100644
--- a/extensions/kafka-eight/pom.xml
+++ b/extensions/kafka-eight/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions/kafka-extraction-namespace/pom.xml b/extensions/kafka-extraction-namespace/pom.xml
index e1bbb9d..7b76a41 100644
--- a/extensions/kafka-extraction-namespace/pom.xml
+++ b/extensions/kafka-extraction-namespace/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.8.1-rc4-SNAPSHOT</version>
+    <version>0.8.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions/mysql-metadata-storage/pom.xml b/extensions/mysql-metadata-storage/pom.xml
index c9ebf00..5bf4c8a 100644
--- a/extensions/mysql-metadata-storage/pom.xml
+++ b/extensions/mysql-metadata-storage/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions/namespace-lookup/pom.xml b/extensions/namespace-lookup/pom.xml
index 83865a5..8472f53 100644
--- a/extensions/namespace-lookup/pom.xml
+++ b/extensions/namespace-lookup/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.8.1-rc4-SNAPSHOT</version>
+    <version>0.8.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions/postgresql-metadata-storage/pom.xml b/extensions/postgresql-metadata-storage/pom.xml
index cc856f8..d3a7f80 100644
--- a/extensions/postgresql-metadata-storage/pom.xml
+++ b/extensions/postgresql-metadata-storage/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions/rabbitmq/pom.xml b/extensions/rabbitmq/pom.xml
index 87ae2e6..1097ce8 100644
--- a/extensions/rabbitmq/pom.xml
+++ b/extensions/rabbitmq/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions/s3-extensions/pom.xml b/extensions/s3-extensions/pom.xml
index 26373b0..3e6155e 100644
--- a/extensions/s3-extensions/pom.xml
+++ b/extensions/s3-extensions/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/indexing-hadoop/pom.xml b/indexing-hadoop/pom.xml
index 7b81d12..492a7c1 100644
--- a/indexing-hadoop/pom.xml
+++ b/indexing-hadoop/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/indexing-service/pom.xml b/indexing-service/pom.xml
index 9c58b9c..52b5692 100644
--- a/indexing-service/pom.xml
+++ b/indexing-service/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/integration-tests/pom.xml b/integration-tests/pom.xml
index 9bb8d86..0d03081 100644
--- a/integration-tests/pom.xml
+++ b/integration-tests/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/pom.xml b/pom.xml
index af8f9b0..1ecb871 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
     </parent>
 
     <artifactId>druid</artifactId>
-    <version>0.8.1-rc4-SNAPSHOT</version>
+    <version>0.8.1</version>
     <packaging>pom</packaging>
 
     <name>${project.groupId}:${project.artifactId}</name>
@@ -61,7 +61,7 @@
         <connection>scm:git:ssh://git@github.com/druid-io/druid.git</connection>
         <developerConnection>scm:git:ssh://git@github.com/druid-io/druid.git</developerConnection>
         <url>https://github.com/druid-io/druid.git</url>
-        <tag>druid-0.8.0-SNAPSHOT</tag>
+        <tag>druid-0.8.1</tag>
     </scm>
 
     <properties>
diff --git a/processing/pom.xml b/processing/pom.xml
index a04098c..806790e 100644
--- a/processing/pom.xml
+++ b/processing/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/server/pom.xml b/server/pom.xml
index de02f14..82654b1 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>
diff --git a/services/pom.xml b/services/pom.xml
index 78fda01..3571e94 100644
--- a/services/pom.xml
+++ b/services/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.8.1-rc4-SNAPSHOT</version>
+        <version>0.8.1</version>
     </parent>
 
     <dependencies>