[maven-release-plugin] prepare release druid-0.21.1-rc2
diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index aaeb890..059df41 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -27,7 +27,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
   </parent>
 
   <prerequisites>
diff --git a/cloud/aws-common/pom.xml b/cloud/aws-common/pom.xml
index 2c77f7e..842efb2 100644
--- a/cloud/aws-common/pom.xml
+++ b/cloud/aws-common/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/cloud/gcp-common/pom.xml b/cloud/gcp-common/pom.xml
index 8d2d5b9..3d598a1 100644
--- a/cloud/gcp-common/pom.xml
+++ b/cloud/gcp-common/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/core/pom.xml b/core/pom.xml
index ff312e7..ccbd237 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <artifactId>druid</artifactId>
     <groupId>org.apache.druid</groupId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
   </parent>
 
   <properties>
diff --git a/distribution/pom.xml b/distribution/pom.xml
index 7b9c47d..2007620 100644
--- a/distribution/pom.xml
+++ b/distribution/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <artifactId>druid</artifactId>
         <groupId>org.apache.druid</groupId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
     </parent>
 
     <dependencies>
diff --git a/extendedset/pom.xml b/extendedset/pom.xml
index cc683e5..2a7fb1a 100755
--- a/extendedset/pom.xml
+++ b/extendedset/pom.xml
@@ -31,7 +31,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
   </parent>
 
   <dependencies>
diff --git a/extensions-contrib/aliyun-oss-extensions/pom.xml b/extensions-contrib/aliyun-oss-extensions/pom.xml
index b8125ed..0b456c4 100644
--- a/extensions-contrib/aliyun-oss-extensions/pom.xml
+++ b/extensions-contrib/aliyun-oss-extensions/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   
diff --git a/extensions-contrib/ambari-metrics-emitter/pom.xml b/extensions-contrib/ambari-metrics-emitter/pom.xml
index cc79fa6..df6fabc 100644
--- a/extensions-contrib/ambari-metrics-emitter/pom.xml
+++ b/extensions-contrib/ambari-metrics-emitter/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/cassandra-storage/pom.xml b/extensions-contrib/cassandra-storage/pom.xml
index 8460e6f..eb06a67 100644
--- a/extensions-contrib/cassandra-storage/pom.xml
+++ b/extensions-contrib/cassandra-storage/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/cloudfiles-extensions/pom.xml b/extensions-contrib/cloudfiles-extensions/pom.xml
index 37b5250..d457dd1 100644
--- a/extensions-contrib/cloudfiles-extensions/pom.xml
+++ b/extensions-contrib/cloudfiles-extensions/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/distinctcount/pom.xml b/extensions-contrib/distinctcount/pom.xml
index 14ae9f4..457e8b2 100644
--- a/extensions-contrib/distinctcount/pom.xml
+++ b/extensions-contrib/distinctcount/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/dropwizard-emitter/pom.xml b/extensions-contrib/dropwizard-emitter/pom.xml
index 51ed0a1..2332095 100644
--- a/extensions-contrib/dropwizard-emitter/pom.xml
+++ b/extensions-contrib/dropwizard-emitter/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/gce-extensions/pom.xml b/extensions-contrib/gce-extensions/pom.xml
index 68a6e92..f67ce66 100644
--- a/extensions-contrib/gce-extensions/pom.xml
+++ b/extensions-contrib/gce-extensions/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-contrib/graphite-emitter/pom.xml b/extensions-contrib/graphite-emitter/pom.xml
index 8c84bc4..20cca9e 100644
--- a/extensions-contrib/graphite-emitter/pom.xml
+++ b/extensions-contrib/graphite-emitter/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/influx-extensions/pom.xml b/extensions-contrib/influx-extensions/pom.xml
index b2eed15..12e79d0 100644
--- a/extensions-contrib/influx-extensions/pom.xml
+++ b/extensions-contrib/influx-extensions/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/influxdb-emitter/pom.xml b/extensions-contrib/influxdb-emitter/pom.xml
index 5d9fe8a..ac80263 100644
--- a/extensions-contrib/influxdb-emitter/pom.xml
+++ b/extensions-contrib/influxdb-emitter/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/kafka-emitter/pom.xml b/extensions-contrib/kafka-emitter/pom.xml
index e5c1b99..43ef8fd 100644
--- a/extensions-contrib/kafka-emitter/pom.xml
+++ b/extensions-contrib/kafka-emitter/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/materialized-view-maintenance/pom.xml b/extensions-contrib/materialized-view-maintenance/pom.xml
index b1b0912..5ec799b 100644
--- a/extensions-contrib/materialized-view-maintenance/pom.xml
+++ b/extensions-contrib/materialized-view-maintenance/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>druid</artifactId>
         <groupId>org.apache.druid</groupId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-contrib/materialized-view-selection/pom.xml b/extensions-contrib/materialized-view-selection/pom.xml
index 55ccb5a..7e93390 100644
--- a/extensions-contrib/materialized-view-selection/pom.xml
+++ b/extensions-contrib/materialized-view-selection/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>druid</artifactId>
         <groupId>org.apache.druid</groupId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-contrib/momentsketch/pom.xml b/extensions-contrib/momentsketch/pom.xml
index 64ad43d..0118cfe 100644
--- a/extensions-contrib/momentsketch/pom.xml
+++ b/extensions-contrib/momentsketch/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>druid</artifactId>
         <groupId>org.apache.druid</groupId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-contrib/moving-average-query/pom.xml b/extensions-contrib/moving-average-query/pom.xml
index d7f582d..377a71c 100644
--- a/extensions-contrib/moving-average-query/pom.xml
+++ b/extensions-contrib/moving-average-query/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/opentsdb-emitter/pom.xml b/extensions-contrib/opentsdb-emitter/pom.xml
index 91f01a8..6ea413f 100644
--- a/extensions-contrib/opentsdb-emitter/pom.xml
+++ b/extensions-contrib/opentsdb-emitter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-contrib/redis-cache/pom.xml b/extensions-contrib/redis-cache/pom.xml
index 1d6131a..0d71997 100644
--- a/extensions-contrib/redis-cache/pom.xml
+++ b/extensions-contrib/redis-cache/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/sqlserver-metadata-storage/pom.xml b/extensions-contrib/sqlserver-metadata-storage/pom.xml
index f8ca2b7..73abe8a 100644
--- a/extensions-contrib/sqlserver-metadata-storage/pom.xml
+++ b/extensions-contrib/sqlserver-metadata-storage/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-contrib/statsd-emitter/pom.xml b/extensions-contrib/statsd-emitter/pom.xml
index 02a13c6..291f9fe 100644
--- a/extensions-contrib/statsd-emitter/pom.xml
+++ b/extensions-contrib/statsd-emitter/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>druid</artifactId>
     <groupId>org.apache.druid</groupId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-contrib/tdigestsketch/pom.xml b/extensions-contrib/tdigestsketch/pom.xml
index a026ebf..17b8a30 100644
--- a/extensions-contrib/tdigestsketch/pom.xml
+++ b/extensions-contrib/tdigestsketch/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>druid</artifactId>
     <groupId>org.apache.druid</groupId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-contrib/thrift-extensions/pom.xml b/extensions-contrib/thrift-extensions/pom.xml
index 370bb32..3a831f8 100644
--- a/extensions-contrib/thrift-extensions/pom.xml
+++ b/extensions-contrib/thrift-extensions/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <artifactId>druid</artifactId>
     <groupId>org.apache.druid</groupId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-contrib/time-min-max/pom.xml b/extensions-contrib/time-min-max/pom.xml
index bcd6d43..cad0c2d 100644
--- a/extensions-contrib/time-min-max/pom.xml
+++ b/extensions-contrib/time-min-max/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>druid</artifactId>
     <groupId>org.apache.druid</groupId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-contrib/virtual-columns/pom.xml b/extensions-contrib/virtual-columns/pom.xml
index 6bb1a2c..d2481ef 100644
--- a/extensions-contrib/virtual-columns/pom.xml
+++ b/extensions-contrib/virtual-columns/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/avro-extensions/pom.xml b/extensions-core/avro-extensions/pom.xml
index b83d9c7..66458ab 100644
--- a/extensions-core/avro-extensions/pom.xml
+++ b/extensions-core/avro-extensions/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/azure-extensions/pom.xml b/extensions-core/azure-extensions/pom.xml
index f2c0c71..ff3eb94 100644
--- a/extensions-core/azure-extensions/pom.xml
+++ b/extensions-core/azure-extensions/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/datasketches/pom.xml b/extensions-core/datasketches/pom.xml
index ab1a6f9..b65203b 100644
--- a/extensions-core/datasketches/pom.xml
+++ b/extensions-core/datasketches/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/druid-aws-rds-extensions/pom.xml b/extensions-core/druid-aws-rds-extensions/pom.xml
index 2abb63f..3826633 100644
--- a/extensions-core/druid-aws-rds-extensions/pom.xml
+++ b/extensions-core/druid-aws-rds-extensions/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/druid-basic-security/pom.xml b/extensions-core/druid-basic-security/pom.xml
index 680eec9..3de3fca 100644
--- a/extensions-core/druid-basic-security/pom.xml
+++ b/extensions-core/druid-basic-security/pom.xml
@@ -30,7 +30,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/druid-bloom-filter/pom.xml b/extensions-core/druid-bloom-filter/pom.xml
index 41ed664..ac3972f 100644
--- a/extensions-core/druid-bloom-filter/pom.xml
+++ b/extensions-core/druid-bloom-filter/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/druid-kerberos/pom.xml b/extensions-core/druid-kerberos/pom.xml
index b44b5c1..8424c1e 100644
--- a/extensions-core/druid-kerberos/pom.xml
+++ b/extensions-core/druid-kerberos/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/druid-pac4j/pom.xml b/extensions-core/druid-pac4j/pom.xml
index efd001c..7d15c84 100644
--- a/extensions-core/druid-pac4j/pom.xml
+++ b/extensions-core/druid-pac4j/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/druid-ranger-security/pom.xml b/extensions-core/druid-ranger-security/pom.xml
index f913ea5..0ba1e27 100644
--- a/extensions-core/druid-ranger-security/pom.xml
+++ b/extensions-core/druid-ranger-security/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/ec2-extensions/pom.xml b/extensions-core/ec2-extensions/pom.xml
index dd500f2..a29f21d 100644
--- a/extensions-core/ec2-extensions/pom.xml
+++ b/extensions-core/ec2-extensions/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/google-extensions/pom.xml b/extensions-core/google-extensions/pom.xml
index 4dfe5a5..df236fe 100644
--- a/extensions-core/google-extensions/pom.xml
+++ b/extensions-core/google-extensions/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/hdfs-storage/pom.xml b/extensions-core/hdfs-storage/pom.xml
index a65503f..6c47520 100644
--- a/extensions-core/hdfs-storage/pom.xml
+++ b/extensions-core/hdfs-storage/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/histogram/pom.xml b/extensions-core/histogram/pom.xml
index 4a8d795..1e102f9 100644
--- a/extensions-core/histogram/pom.xml
+++ b/extensions-core/histogram/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</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 baa9ccf..dc7d899 100644
--- a/extensions-core/kafka-extraction-namespace/pom.xml
+++ b/extensions-core/kafka-extraction-namespace/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/kafka-indexing-service/pom.xml b/extensions-core/kafka-indexing-service/pom.xml
index c6cb091..298dfa9 100644
--- a/extensions-core/kafka-indexing-service/pom.xml
+++ b/extensions-core/kafka-indexing-service/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/kinesis-indexing-service/pom.xml b/extensions-core/kinesis-indexing-service/pom.xml
index b9e8b76..b602eaf 100644
--- a/extensions-core/kinesis-indexing-service/pom.xml
+++ b/extensions-core/kinesis-indexing-service/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/kubernetes-extensions/pom.xml b/extensions-core/kubernetes-extensions/pom.xml
index 6d5eeff..807531b 100644
--- a/extensions-core/kubernetes-extensions/pom.xml
+++ b/extensions-core/kubernetes-extensions/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/lookups-cached-global/pom.xml b/extensions-core/lookups-cached-global/pom.xml
index 38350c3..ed0c88c 100644
--- a/extensions-core/lookups-cached-global/pom.xml
+++ b/extensions-core/lookups-cached-global/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/lookups-cached-single/pom.xml b/extensions-core/lookups-cached-single/pom.xml
index ee1e90f..ef365ea 100644
--- a/extensions-core/lookups-cached-single/pom.xml
+++ b/extensions-core/lookups-cached-single/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</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 65fa4ab..b8a3ba7 100644
--- a/extensions-core/mysql-metadata-storage/pom.xml
+++ b/extensions-core/mysql-metadata-storage/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/orc-extensions/pom.xml b/extensions-core/orc-extensions/pom.xml
index ae52d9e..84c174f 100644
--- a/extensions-core/orc-extensions/pom.xml
+++ b/extensions-core/orc-extensions/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <artifactId>druid</artifactId>
         <groupId>org.apache.druid</groupId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-core/parquet-extensions/pom.xml b/extensions-core/parquet-extensions/pom.xml
index f33a040..ba6f7a2 100644
--- a/extensions-core/parquet-extensions/pom.xml
+++ b/extensions-core/parquet-extensions/pom.xml
@@ -27,7 +27,7 @@
   <parent>
     <artifactId>druid</artifactId>
     <groupId>org.apache.druid</groupId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-core/postgresql-metadata-storage/pom.xml b/extensions-core/postgresql-metadata-storage/pom.xml
index 791682d..c0005d4 100644
--- a/extensions-core/postgresql-metadata-storage/pom.xml
+++ b/extensions-core/postgresql-metadata-storage/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/extensions-core/protobuf-extensions/pom.xml b/extensions-core/protobuf-extensions/pom.xml
index 987b4aa..9c2f255 100644
--- a/extensions-core/protobuf-extensions/pom.xml
+++ b/extensions-core/protobuf-extensions/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <artifactId>druid</artifactId>
     <groupId>org.apache.druid</groupId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/s3-extensions/pom.xml b/extensions-core/s3-extensions/pom.xml
index ab98910..255f975 100644
--- a/extensions-core/s3-extensions/pom.xml
+++ b/extensions-core/s3-extensions/pom.xml
@@ -29,7 +29,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/extensions-core/simple-client-sslcontext/pom.xml b/extensions-core/simple-client-sslcontext/pom.xml
index f456b83..592b806 100644
--- a/extensions-core/simple-client-sslcontext/pom.xml
+++ b/extensions-core/simple-client-sslcontext/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>druid</artifactId>
     <groupId>org.apache.druid</groupId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/extensions-core/stats/pom.xml b/extensions-core/stats/pom.xml
index 8568677..1280427 100644
--- a/extensions-core/stats/pom.xml
+++ b/extensions-core/stats/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/hll/pom.xml b/hll/pom.xml
index 73575d6..c1b53a9 100644
--- a/hll/pom.xml
+++ b/hll/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
     </parent>
 
     <artifactId>druid-hll</artifactId>
diff --git a/indexing-hadoop/pom.xml b/indexing-hadoop/pom.xml
index b622714..afbd82c 100644
--- a/indexing-hadoop/pom.xml
+++ b/indexing-hadoop/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
     </parent>
 
     <dependencies>
diff --git a/indexing-service/pom.xml b/indexing-service/pom.xml
index 3bb5968..303cfdb 100644
--- a/indexing-service/pom.xml
+++ b/indexing-service/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
     </parent>
 
     <dependencies>
diff --git a/integration-tests/pom.xml b/integration-tests/pom.xml
index da9f81b..c763f44 100644
--- a/integration-tests/pom.xml
+++ b/integration-tests/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
     </parent>
 
     <dependencies>
diff --git a/pom.xml b/pom.xml
index cf89cca..f413e79 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@
 
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
     <packaging>pom</packaging>
 
     <name>Druid</name>
@@ -66,7 +66,7 @@
         <connection>scm:git:ssh://git@github.com/apache/druid.git</connection>
         <developerConnection>scm:git:ssh://git@github.com/apache/druid.git</developerConnection>
         <url>https://github.com/apache/druid.git</url>
-        <tag>0.19.0-SNAPSHOT</tag>
+        <tag>druid-0.21.1-rc2</tag>
     </scm>
 
     <properties>
diff --git a/processing/pom.xml b/processing/pom.xml
index 38a879e..18d072b 100644
--- a/processing/pom.xml
+++ b/processing/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
     </parent>
 
     <dependencies>
diff --git a/server/pom.xml b/server/pom.xml
index 9317478..5b513ba 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
     </parent>
 
     <dependencies>
diff --git a/services/pom.xml b/services/pom.xml
index 8b63f14..4a6556e 100644
--- a/services/pom.xml
+++ b/services/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.druid</groupId>
         <artifactId>druid</artifactId>
-        <version>0.21.2-SNAPSHOT</version>
+        <version>0.21.1</version>
     </parent>
 
     <dependencies>
diff --git a/sql/pom.xml b/sql/pom.xml
index cbe7fcb..77dcec2 100644
--- a/sql/pom.xml
+++ b/sql/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
   </parent>
 
   <dependencies>
diff --git a/web-console/pom.xml b/web-console/pom.xml
index 5ee7721..c4d0953 100644
--- a/web-console/pom.xml
+++ b/web-console/pom.xml
@@ -28,7 +28,7 @@
   <parent>
     <groupId>org.apache.druid</groupId>
     <artifactId>druid</artifactId>
-    <version>0.21.2-SNAPSHOT</version>
+    <version>0.21.1</version>
   </parent>
 
   <properties>