[maven-release-plugin] prepare release drill-1.6.0
diff --git a/common/pom.xml b/common/pom.xml
index a09a268..d93877e 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>drill-root</artifactId>
     <groupId>org.apache.drill</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-common</artifactId>
diff --git a/contrib/data/pom.xml b/contrib/data/pom.xml
index 0c1af0b..72cba94 100644
--- a/contrib/data/pom.xml
+++ b/contrib/data/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>drill-contrib-parent</artifactId>
     <groupId>org.apache.drill.contrib</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <groupId>org.apache.drill.contrib.data</groupId>
diff --git a/contrib/data/tpch-sample-data/pom.xml b/contrib/data/tpch-sample-data/pom.xml
index 26790ea..d203a41 100644
--- a/contrib/data/tpch-sample-data/pom.xml
+++ b/contrib/data/tpch-sample-data/pom.xml
@@ -14,7 +14,7 @@
   <parent>
     <artifactId>drill-contrib-data-parent</artifactId>
     <groupId>org.apache.drill.contrib.data</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>tpch-sample-data</artifactId>
diff --git a/contrib/gis/pom.xml b/contrib/gis/pom.xml
index b6af85a..e89b954 100644
--- a/contrib/gis/pom.xml
+++ b/contrib/gis/pom.xml
@@ -20,7 +20,7 @@
 	<parent>
 		<artifactId>drill-contrib-parent</artifactId>
 		<groupId>org.apache.drill.contrib</groupId>
-		<version>1.6.0-SNAPSHOT</version>
+		<version>1.6.0</version>
 	</parent>
 
 	<artifactId>drill-gis</artifactId>
diff --git a/contrib/pom.xml b/contrib/pom.xml
index da972d6..0005fc5 100644
--- a/contrib/pom.xml
+++ b/contrib/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>drill-root</artifactId>
     <groupId>org.apache.drill</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <groupId>org.apache.drill.contrib</groupId>
diff --git a/contrib/sqlline/pom.xml b/contrib/sqlline/pom.xml
index 7a76f14..c4a8b5b 100644
--- a/contrib/sqlline/pom.xml
+++ b/contrib/sqlline/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>drill-contrib-parent</artifactId>
     <groupId>org.apache.drill.contrib</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-sqlline</artifactId>
diff --git a/contrib/storage-hbase/pom.xml b/contrib/storage-hbase/pom.xml
index b904806..e79e146 100644
--- a/contrib/storage-hbase/pom.xml
+++ b/contrib/storage-hbase/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>drill-contrib-parent</artifactId>
     <groupId>org.apache.drill.contrib</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-storage-hbase</artifactId>
diff --git a/contrib/storage-hive/core/pom.xml b/contrib/storage-hive/core/pom.xml
index d15856a..9aad92e 100644
--- a/contrib/storage-hive/core/pom.xml
+++ b/contrib/storage-hive/core/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.drill.contrib.storage-hive</groupId>
     <artifactId>drill-contrib-storage-hive-parent</artifactId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-storage-hive-core</artifactId>
diff --git a/contrib/storage-hive/hive-exec-shade/pom.xml b/contrib/storage-hive/hive-exec-shade/pom.xml
index 8766ebc..1d2fd14 100644
--- a/contrib/storage-hive/hive-exec-shade/pom.xml
+++ b/contrib/storage-hive/hive-exec-shade/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.drill.contrib.storage-hive</groupId>
     <artifactId>drill-contrib-storage-hive-parent</artifactId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-hive-exec-shaded</artifactId>
diff --git a/contrib/storage-hive/pom.xml b/contrib/storage-hive/pom.xml
index 9090b80..615008d 100644
--- a/contrib/storage-hive/pom.xml
+++ b/contrib/storage-hive/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.drill.contrib</groupId>
     <artifactId>drill-contrib-parent</artifactId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <groupId>org.apache.drill.contrib.storage-hive</groupId>
diff --git a/contrib/storage-jdbc/pom.xml b/contrib/storage-jdbc/pom.xml
index 0011e6c..16dd302 100755
--- a/contrib/storage-jdbc/pom.xml
+++ b/contrib/storage-jdbc/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>drill-contrib-parent</artifactId>
     <groupId>org.apache.drill.contrib</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-jdbc-storage</artifactId>
diff --git a/contrib/storage-kudu/pom.xml b/contrib/storage-kudu/pom.xml
index 6469a04..8708e5f 100644
--- a/contrib/storage-kudu/pom.xml
+++ b/contrib/storage-kudu/pom.xml
@@ -14,7 +14,7 @@
   <parent>
     <artifactId>drill-contrib-parent</artifactId>
     <groupId>org.apache.drill.contrib</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-kudu-storage</artifactId>
diff --git a/contrib/storage-mongo/pom.xml b/contrib/storage-mongo/pom.xml
index 67399f0..4c7de63 100644
--- a/contrib/storage-mongo/pom.xml
+++ b/contrib/storage-mongo/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>drill-contrib-parent</artifactId>
     <groupId>org.apache.drill.contrib</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-mongo-storage</artifactId>
diff --git a/distribution/pom.xml b/distribution/pom.xml
index 40a7e0a..f42dd14 100644
--- a/distribution/pom.xml
+++ b/distribution/pom.xml
@@ -14,7 +14,7 @@
   <parent>
     <artifactId>drill-root</artifactId>
     <groupId>org.apache.drill</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>distribution</artifactId>
diff --git a/exec/java-exec/pom.xml b/exec/java-exec/pom.xml
index 2532290..1664bb7 100644
--- a/exec/java-exec/pom.xml
+++ b/exec/java-exec/pom.xml
@@ -14,7 +14,7 @@
   <parent>
     <artifactId>exec-parent</artifactId>
     <groupId>org.apache.drill.exec</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
   <artifactId>drill-java-exec</artifactId>
   <name>exec/Java Execution Engine</name>
diff --git a/exec/jdbc-all/pom.xml b/exec/jdbc-all/pom.xml
index 9aa2298..766a09f 100644
--- a/exec/jdbc-all/pom.xml
+++ b/exec/jdbc-all/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>org.apache.drill.exec</groupId>
     <artifactId>exec-parent</artifactId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-jdbc-all</artifactId>
diff --git a/exec/jdbc/pom.xml b/exec/jdbc/pom.xml
index 6a19a12..4ddb4a9 100644
--- a/exec/jdbc/pom.xml
+++ b/exec/jdbc/pom.xml
@@ -14,7 +14,7 @@
   <parent>
     <groupId>org.apache.drill.exec</groupId>
     <artifactId>exec-parent</artifactId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
   <artifactId>drill-jdbc</artifactId>
   <name>exec/JDBC Driver using dependencies</name>
diff --git a/exec/memory/base/pom.xml b/exec/memory/base/pom.xml
index 476ac31..0f9a140 100644
--- a/exec/memory/base/pom.xml
+++ b/exec/memory/base/pom.xml
@@ -14,7 +14,7 @@
   <parent>
     <artifactId>memory-parent</artifactId>
     <groupId>org.apache.drill.memory</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
   <artifactId>drill-memory-base</artifactId>
   <name>exec/memory/base</name>
diff --git a/exec/memory/pom.xml b/exec/memory/pom.xml
index b45bffe..935f211 100644
--- a/exec/memory/pom.xml
+++ b/exec/memory/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>exec-parent</artifactId>
     <groupId>org.apache.drill.exec</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <groupId>org.apache.drill.memory</groupId>
diff --git a/exec/pom.xml b/exec/pom.xml
index 74db10d..55fda0a 100644
--- a/exec/pom.xml
+++ b/exec/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>drill-root</artifactId>
     <groupId>org.apache.drill</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <groupId>org.apache.drill.exec</groupId>
diff --git a/exec/rpc/pom.xml b/exec/rpc/pom.xml
index a51737e..4c5e170 100644
--- a/exec/rpc/pom.xml
+++ b/exec/rpc/pom.xml
@@ -14,7 +14,7 @@
   <parent>
     <artifactId>exec-parent</artifactId>
     <groupId>org.apache.drill.exec</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
   <artifactId>drill-rpc</artifactId>
   <name>exec/rpc</name>
diff --git a/exec/vector/pom.xml b/exec/vector/pom.xml
index 4a04d6d..0f06dad 100644
--- a/exec/vector/pom.xml
+++ b/exec/vector/pom.xml
@@ -14,7 +14,7 @@
   <parent>
     <artifactId>exec-parent</artifactId>
     <groupId>org.apache.drill.exec</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
   <artifactId>vector</artifactId>
   <name>exec/Vectors</name>
diff --git a/logical/pom.xml b/logical/pom.xml
index ee12e16..79fe6c7 100644
--- a/logical/pom.xml
+++ b/logical/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>drill-root</artifactId>
     <groupId>org.apache.drill</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-logical</artifactId>
diff --git a/pom.xml b/pom.xml
index a907ae7..1996a34 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
 
   <groupId>org.apache.drill</groupId>
   <artifactId>drill-root</artifactId>
-  <version>1.6.0-SNAPSHOT</version>
+  <version>1.6.0</version>
   <packaging>pom</packaging>
 
   <name>Apache Drill Root POM</name>
@@ -52,7 +52,7 @@
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/drill.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/drill.git</developerConnection>
     <url>https://github.com/apache/drill</url>
-    <tag>HEAD</tag>
+    <tag>drill-1.6.0</tag>
   </scm>
 
   <mailingLists>
diff --git a/protocol/pom.xml b/protocol/pom.xml
index 488028c..561fc00 100644
--- a/protocol/pom.xml
+++ b/protocol/pom.xml
@@ -15,7 +15,7 @@
   <parent>
     <artifactId>drill-root</artifactId>
     <groupId>org.apache.drill</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-protocol</artifactId>
diff --git a/tools/fmpp/pom.xml b/tools/fmpp/pom.xml
index 4b68af6..8b60c1a 100644
--- a/tools/fmpp/pom.xml
+++ b/tools/fmpp/pom.xml
@@ -15,7 +15,7 @@
   <parent>
     <artifactId>tools-parent</artifactId>
     <groupId>org.apache.drill.tools</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <artifactId>drill-fmpp-maven-plugin</artifactId>
diff --git a/tools/pom.xml b/tools/pom.xml
index bbbb345..2cdeca9 100644
--- a/tools/pom.xml
+++ b/tools/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>drill-root</artifactId>
     <groupId>org.apache.drill</groupId>
-    <version>1.6.0-SNAPSHOT</version>
+    <version>1.6.0</version>
   </parent>
 
   <groupId>org.apache.drill.tools</groupId>