[maven-release-plugin] prepare release druid-0.9.0
diff --git a/aws-common/pom.xml b/aws-common/pom.xml
index 5a02ebe..7f0f9ef 100644
--- a/aws-common/pom.xml
+++ b/aws-common/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>
diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index 6519c0e..1204c23 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -27,7 +27,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.9.0-rc4-SNAPSHOT</version>
+    <version>0.9.0</version>
   </parent>
 
   <prerequisites>
diff --git a/common/pom.xml b/common/pom.xml
index 0d0f976..0eb4b00 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>
diff --git a/distribution/pom.xml b/distribution/pom.xml
index 39e3ddd..68ae178 100644
--- a/distribution/pom.xml
+++ b/distribution/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <artifactId>druid</artifactId>
         <groupId>io.druid</groupId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>
diff --git a/examples/pom.xml b/examples/pom.xml
index 80ea696..7c84897 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>
diff --git a/extensions-contrib/azure-extensions/pom.xml b/extensions-contrib/azure-extensions/pom.xml
index 1b861fe..705df0a 100644
--- a/extensions-contrib/azure-extensions/pom.xml
+++ b/extensions-contrib/azure-extensions/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/cassandra-storage/pom.xml b/extensions-contrib/cassandra-storage/pom.xml
index 0e45860..227e8ec 100644
--- a/extensions-contrib/cassandra-storage/pom.xml
+++ b/extensions-contrib/cassandra-storage/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/cloudfiles-extensions/pom.xml b/extensions-contrib/cloudfiles-extensions/pom.xml
index 7073435..444fff9 100644
--- a/extensions-contrib/cloudfiles-extensions/pom.xml
+++ b/extensions-contrib/cloudfiles-extensions/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/graphite-emitter/pom.xml b/extensions-contrib/graphite-emitter/pom.xml
index dd09872..51f1c59 100644
--- a/extensions-contrib/graphite-emitter/pom.xml
+++ b/extensions-contrib/graphite-emitter/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.9.0-rc4-SNAPSHOT</version>
+    <version>0.9.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/kafka-eight-simpleConsumer/pom.xml b/extensions-contrib/kafka-eight-simpleConsumer/pom.xml
index 7e29698..297b521 100644
--- a/extensions-contrib/kafka-eight-simpleConsumer/pom.xml
+++ b/extensions-contrib/kafka-eight-simpleConsumer/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.9.0-rc4-SNAPSHOT</version>
+    <version>0.9.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/rabbitmq/pom.xml b/extensions-contrib/rabbitmq/pom.xml
index bda5344..e117d1e 100644
--- a/extensions-contrib/rabbitmq/pom.xml
+++ b/extensions-contrib/rabbitmq/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/avro-extensions/pom.xml b/extensions-core/avro-extensions/pom.xml
index 553b947..ec09e6b 100644
--- a/extensions-core/avro-extensions/pom.xml
+++ b/extensions-core/avro-extensions/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.9.0-rc4-SNAPSHOT</version>
+    <version>0.9.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/datasketches/pom.xml b/extensions-core/datasketches/pom.xml
index 710599c..1109255 100644
--- a/extensions-core/datasketches/pom.xml
+++ b/extensions-core/datasketches/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.9.0-rc4-SNAPSHOT</version>
+    <version>0.9.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/hdfs-storage/pom.xml b/extensions-core/hdfs-storage/pom.xml
index 40137a0..b69eddf 100644
--- a/extensions-core/hdfs-storage/pom.xml
+++ b/extensions-core/hdfs-storage/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/histogram/pom.xml b/extensions-core/histogram/pom.xml
index e42878f..16588d7 100644
--- a/extensions-core/histogram/pom.xml
+++ b/extensions-core/histogram/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/kafka-eight/pom.xml b/extensions-core/kafka-eight/pom.xml
index 69d7626..7321c09 100644
--- a/extensions-core/kafka-eight/pom.xml
+++ b/extensions-core/kafka-eight/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/kafka-extraction-namespace/pom.xml b/extensions-core/kafka-extraction-namespace/pom.xml
index 3ca2bd4..143714b 100644
--- a/extensions-core/kafka-extraction-namespace/pom.xml
+++ b/extensions-core/kafka-extraction-namespace/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.9.0-rc4-SNAPSHOT</version>
+    <version>0.9.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/mysql-metadata-storage/pom.xml b/extensions-core/mysql-metadata-storage/pom.xml
index af125d4..56360ff 100644
--- a/extensions-core/mysql-metadata-storage/pom.xml
+++ b/extensions-core/mysql-metadata-storage/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/namespace-lookup/pom.xml b/extensions-core/namespace-lookup/pom.xml
index f10eba5..02fbc61 100644
--- a/extensions-core/namespace-lookup/pom.xml
+++ b/extensions-core/namespace-lookup/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>io.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.9.0-rc4-SNAPSHOT</version>
+    <version>0.9.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/postgresql-metadata-storage/pom.xml b/extensions-core/postgresql-metadata-storage/pom.xml
index 67e279e..cde4262 100644
--- a/extensions-core/postgresql-metadata-storage/pom.xml
+++ b/extensions-core/postgresql-metadata-storage/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/s3-extensions/pom.xml b/extensions-core/s3-extensions/pom.xml
index e7f0f8c..eb8861e 100644
--- a/extensions-core/s3-extensions/pom.xml
+++ b/extensions-core/s3-extensions/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/indexing-hadoop/pom.xml b/indexing-hadoop/pom.xml
index 5bbc6c1..792f5ff 100644
--- a/indexing-hadoop/pom.xml
+++ b/indexing-hadoop/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>
diff --git a/indexing-service/pom.xml b/indexing-service/pom.xml
index cc93849..4704494 100644
--- a/indexing-service/pom.xml
+++ b/indexing-service/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>
diff --git a/integration-tests/pom.xml b/integration-tests/pom.xml
index 07b659d..6ddc432 100644
--- a/integration-tests/pom.xml
+++ b/integration-tests/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <properties>
diff --git a/pom.xml b/pom.xml
index bb368b6..52bf02d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
     </parent>
 
     <artifactId>druid</artifactId>
-    <version>0.9.0-rc4-SNAPSHOT</version>
+    <version>0.9.0</version>
     <packaging>pom</packaging>
 
     <name>${project.groupId}:${project.artifactId}</name>
@@ -53,7 +53,7 @@
         <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-0.9.0-rc3</tag>
+        <tag>druid-0.9.0</tag>
     </scm>
 
     <properties>
diff --git a/processing/pom.xml b/processing/pom.xml
index 71cb7b2..cd44c15 100644
--- a/processing/pom.xml
+++ b/processing/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>
diff --git a/server/pom.xml b/server/pom.xml
index 3960c7d..486951c 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>
diff --git a/services/pom.xml b/services/pom.xml
index e45b1d3..4439192 100644
--- a/services/pom.xml
+++ b/services/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>io.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.9.0-rc4-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <dependencies>