[ASTERIXDB-2174][COMP] Improve partitioning propagation in GroupBy

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
- Improve partitioning property computation in
  AbstractPreclusteredGroupByPOperator
  If "gby v1 as v2" and input partitioned on (v1)
  then output is partitioned on (v2)

Change-Id: Ib679278d6ee6c53b1d9f581438e8bd04c56c2b08
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2176
Sonar-Qube: Jenkins <[email protected]>
Tested-by: Jenkins <[email protected]>
Contrib: Jenkins <[email protected]>
Integration-Tests: Jenkins <[email protected]>
Reviewed-by: abdullah alamoudi <[email protected]>


Project: http://git-wip-us.apache.org/repos/asf/asterixdb/repo
Commit: http://git-wip-us.apache.org/repos/asf/asterixdb/commit/dc7e68a0
Tree: http://git-wip-us.apache.org/repos/asf/asterixdb/tree/dc7e68a0
Diff: http://git-wip-us.apache.org/repos/asf/asterixdb/diff/dc7e68a0

Branch: refs/heads/master
Commit: dc7e68a0212fd74147c8a77d1cf83a69a186ff57
Parents: ed46938
Author: Dmitry Lychagin <[email protected]>
Authored: Wed Nov 22 12:24:26 2017 -0800
Committer: Dmitry Lychagin <[email protected]>
Committed: Tue Nov 28 13:33:07 2017 -0800

----------------------------------------------------------------------
 .../queries/gby_partitioning_property_01.sqlpp  |  43 +++
 .../optimizerts/results/gby_inline.plan         |   4 +-
 .../results/gby_partitioning_property_01.plan   |  36 ++
 .../inlined_q18_large_volume_customer.plan      |   2 +-
 .../optimizerts/results/query-issue697.plan     |   4 +-
 .../split-materialization-above-join.plan       | 125 +++---
 .../results/subquery/query-ASTERIXDB-1572.plan  |  76 ++--
 .../tpcds/query-ASTERIXDB-1581-correlated.plan  | 382 +++++++++----------
 .../results/tpcds/query-ASTERIXDB-1581.plan     | 251 ++++++------
 .../AbstractPreclusteredGroupByPOperator.java   |  37 ++
 10 files changed, 533 insertions(+), 427 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/asterixdb/blob/dc7e68a0/asterixdb/asterix-app/src/test/resources/optimizerts/queries/gby_partitioning_property_01.sqlpp
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/optimizerts/queries/gby_partitioning_property_01.sqlpp
 
b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/gby_partitioning_property_01.sqlpp
new file mode 100644
index 0000000..1777301
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/optimizerts/queries/gby_partitioning_property_01.sqlpp
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+drop  dataverse test if exists;
+create  dataverse test;
+
+use test;
+
+create type UserType as {
+  id: string
+};
+
+create type MessageType as {
+  id: string
+};
+
+create dataset GleambookUsers(UserType) primary key id;
+
+create dataset GleambookMessages(MessageType) primary key id;
+
+select meta(user).id as id, count(*) as count
+from `GleambookUsers` user, `GleambookMessages` message
+where meta(user).id = message.author_id
+group by meta(user).id;
+
+drop  dataverse test;
+

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/dc7e68a0/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_inline.plan
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_inline.plan 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_inline.plan
index 4043a9c..991404c 100644
--- 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_inline.plan
+++ 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_inline.plan
@@ -17,7 +17,7 @@
                       -- STREAM_PROJECT  |PARTITIONED|
                         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                           -- HYBRID_HASH_JOIN [$$ccustkey, $$cnationkey][$$24, 
$$26]  |PARTITIONED|
-                            -- HASH_PARTITION_EXCHANGE [$$ccustkey]  
|PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                               -- PRE_CLUSTERED_GROUP_BY[$$20]  |PARTITIONED|
                                       {
                                         -- AGGREGATE  |LOCAL|
@@ -34,7 +34,7 @@
                                 -- STREAM_PROJECT  |PARTITIONED|
                                   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                     -- HYBRID_HASH_JOIN [$$24][$$22]  
|PARTITIONED|
-                                      -- HASH_PARTITION_EXCHANGE [$$24]  
|PARTITIONED|
+                                      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                         -- STREAM_SELECT  |PARTITIONED|
                                           -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                             -- PRE_CLUSTERED_GROUP_BY[$$25]  
|PARTITIONED|

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/dc7e68a0/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_partitioning_property_01.plan
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_partitioning_property_01.plan
 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_partitioning_property_01.plan
new file mode 100644
index 0000000..7e11745
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/gby_partitioning_property_01.plan
@@ -0,0 +1,36 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+          -- PRE_CLUSTERED_GROUP_BY[$$32]  |PARTITIONED|
+                  {
+                    -- AGGREGATE  |LOCAL|
+                      -- NESTED_TUPLE_SOURCE  |LOCAL|
+                  }
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- SORT_GROUP_BY[$$22]  |PARTITIONED|
+                      {
+                        -- AGGREGATE  |LOCAL|
+                          -- NESTED_TUPLE_SOURCE  |LOCAL|
+                      }
+                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                      -- HYBRID_HASH_JOIN [$$22][$$25]  |PARTITIONED|
+                        -- HASH_PARTITION_EXCHANGE [$$22]  |PARTITIONED|
+                          -- STREAM_PROJECT  |PARTITIONED|
+                            -- ASSIGN  |PARTITIONED|
+                              -- STREAM_PROJECT  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- DATASOURCE_SCAN  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                        -- HASH_PARTITION_EXCHANGE [$$25]  |PARTITIONED|
+                          -- STREAM_PROJECT  |PARTITIONED|
+                            -- ASSIGN  |PARTITIONED|
+                              -- STREAM_PROJECT  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- DATASOURCE_SCAN  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- EMPTY_TUPLE_SOURCE  |PARTITIONED|

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/dc7e68a0/asterixdb/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan
 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan
index 26d6103..143f01b 100644
--- 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan
+++ 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan
@@ -45,7 +45,7 @@
                                                           -- DATASOURCE_SCAN  
|PARTITIONED|
                                                             -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                               -- 
EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                          -- HASH_PARTITION_EXCHANGE 
[$$l_orderkey]  |PARTITIONED|
+                                          -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                             -- STREAM_PROJECT  |PARTITIONED|
                                               -- STREAM_SELECT  |PARTITIONED|
                                                 -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/dc7e68a0/asterixdb/asterix-app/src/test/resources/optimizerts/results/query-issue697.plan
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/query-issue697.plan
 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/query-issue697.plan
index 2d75ff0..aae39ae 100644
--- 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/query-issue697.plan
+++ 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/query-issue697.plan
@@ -3,12 +3,12 @@
     -- STREAM_PROJECT  |PARTITIONED|
       -- ASSIGN  |PARTITIONED|
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-          -- SORT_GROUP_BY[$$20]  |PARTITIONED|
+          -- PRE_CLUSTERED_GROUP_BY[$$20]  |PARTITIONED|
                   {
                     -- AGGREGATE  |LOCAL|
                       -- NESTED_TUPLE_SOURCE  |LOCAL|
                   }
-            -- HASH_PARTITION_EXCHANGE [$$20]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
               -- PRE_CLUSTERED_GROUP_BY[$$16]  |PARTITIONED|
                       {
                         -- AGGREGATE  |LOCAL|

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/dc7e68a0/asterixdb/asterix-app/src/test/resources/optimizerts/results/split-materialization-above-join.plan
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/split-materialization-above-join.plan
 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/split-materialization-above-join.plan
index a81a142..22bc323 100644
--- 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/split-materialization-above-join.plan
+++ 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/split-materialization-above-join.plan
@@ -32,26 +32,26 @@
                                               -- STREAM_PROJECT  |PARTITIONED|
                                                 -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
                                                   -- HYBRID_HASH_JOIN 
[$$prefixTokenLeft][$$prefixTokenRight]  |PARTITIONED|
-                                                    -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                      -- STREAM_PROJECT  
|PARTITIONED|
-                                                        -- ASSIGN  
|PARTITIONED|
-                                                          -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                            -- REPLICATE  
|PARTITIONED|
-                                                              -- 
HASH_PARTITION_EXCHANGE [$$prefixTokenRight]  |PARTITIONED|
-                                                                -- UNNEST  
|PARTITIONED|
-                                                                  -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                    -- 
PRE_CLUSTERED_GROUP_BY[$$97]  |PARTITIONED|
-                                                                            {
-                                                                              
-- AGGREGATE  |LOCAL|
-                                                                               
 -- STREAM_SELECT  |LOCAL|
-                                                                               
   -- NESTED_TUPLE_SOURCE  |LOCAL|
-                                                                            }
-                                                                      -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                        -- 
STABLE_SORT [$$97(ASC), $$i(ASC)]  |PARTITIONED|
-                                                                          -- 
HASH_PARTITION_EXCHANGE [$$97]  |PARTITIONED|
-                                                                            -- 
STREAM_PROJECT  |PARTITIONED|
+                                                    -- HASH_PARTITION_EXCHANGE 
[$$prefixTokenLeft]  |PARTITIONED|
+                                                      -- UNNEST  |PARTITIONED|
+                                                        -- ONE_TO_ONE_EXCHANGE 
 |PARTITIONED|
+                                                          -- 
PRE_CLUSTERED_GROUP_BY[$$95]  |PARTITIONED|
+                                                                  {
+                                                                    -- 
AGGREGATE  |LOCAL|
+                                                                      -- 
STREAM_SELECT  |LOCAL|
+                                                                        -- 
NESTED_TUPLE_SOURCE  |LOCAL|
+                                                                  }
+                                                            -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                              -- STABLE_SORT 
[$$95(ASC), $$i(ASC)]  |PARTITIONED|
+                                                                -- 
HASH_PARTITION_EXCHANGE [$$95]  |PARTITIONED|
+                                                                  -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                    -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                      -- 
HYBRID_HASH_JOIN [$$tokenUnranked][$$tokenGroupped]  |PARTITIONED|
+                                                                        -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                          -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                            -- 
ASSIGN  |PARTITIONED|
                                                                               
-- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
 -- HYBRID_HASH_JOIN [$$tokenUnranked][$$tokenGroupped]  |PARTITIONED|
+                                                                               
 -- REPLICATE  |PARTITIONED|
                                                                                
   -- HASH_PARTITION_EXCHANGE [$$tokenUnranked]  |PARTITIONED|
                                                                                
     -- STREAM_PROJECT  |PARTITIONED|
                                                                                
       -- UNNEST  |PARTITIONED|
@@ -62,19 +62,24 @@
                                                                                
                 -- DATASOURCE_SCAN  |PARTITIONED|
                                                                                
                   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                                
                     -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                                               
   -- HASH_PARTITION_EXCHANGE [$$tokenGroupped]  |PARTITIONED|
-                                                                               
     -- ASSIGN  |PARTITIONED|
-                                                                               
       -- RUNNING_AGGREGATE  |PARTITIONED|
-                                                                               
         -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
           -- SORT_MERGE_EXCHANGE [$$102(ASC), $$tokenGroupped(ASC) ]  
|PARTITIONED|
-                                                                               
             -- STABLE_SORT [$$102(ASC), $$tokenGroupped(ASC)]  |PARTITIONED|
+                                                                        -- 
HASH_PARTITION_EXCHANGE [$$tokenGroupped]  |PARTITIONED|
+                                                                          -- 
ASSIGN  |PARTITIONED|
+                                                                            -- 
RUNNING_AGGREGATE  |PARTITIONED|
+                                                                              
-- STREAM_PROJECT  |PARTITIONED|
+                                                                               
 -- SORT_MERGE_EXCHANGE [$$99(ASC), $$tokenGroupped(ASC) ]  |PARTITIONED|
+                                                                               
   -- STABLE_SORT [$$99(ASC), $$tokenGroupped(ASC)]  |PARTITIONED|
+                                                                               
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
       -- SORT_GROUP_BY[$$128]  |PARTITIONED|
+                                                                               
               {
+                                                                               
                 -- AGGREGATE  |LOCAL|
+                                                                               
                   -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                                                               
               }
+                                                                               
         -- HASH_PARTITION_EXCHANGE [$$128]  |PARTITIONED|
+                                                                               
           -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
             -- ASSIGN  |PARTITIONED|
                                                                                
               -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                 -- SORT_GROUP_BY[$$130]  |PARTITIONED|
-                                                                               
                         {
-                                                                               
                           -- AGGREGATE  |LOCAL|
-                                                                               
                             -- NESTED_TUPLE_SOURCE  |LOCAL|
-                                                                               
                         }
-                                                                               
                   -- HASH_PARTITION_EXCHANGE [$$130]  |PARTITIONED|
+                                                                               
                 -- REPLICATE  |PARTITIONED|
+                                                                               
                   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                                
                     -- SORT_GROUP_BY[$$token]  |PARTITIONED|
                                                                                
                             {
                                                                                
                               -- AGGREGATE  |LOCAL|
@@ -92,23 +97,23 @@
                                                                                
                                         -- DATASOURCE_SCAN  |PARTITIONED|
                                                                                
                                           -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                                
                                             -- EMPTY_TUPLE_SOURCE  
|PARTITIONED|
-                                                    -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                      -- REPLICATE  
|PARTITIONED|
-                                                        -- 
HASH_PARTITION_EXCHANGE [$$prefixTokenRight]  |PARTITIONED|
-                                                          -- UNNEST  
|PARTITIONED|
+                                                    -- HASH_PARTITION_EXCHANGE 
[$$prefixTokenRight]  |PARTITIONED|
+                                                      -- UNNEST  |PARTITIONED|
+                                                        -- ONE_TO_ONE_EXCHANGE 
 |PARTITIONED|
+                                                          -- 
PRE_CLUSTERED_GROUP_BY[$$97]  |PARTITIONED|
+                                                                  {
+                                                                    -- 
AGGREGATE  |LOCAL|
+                                                                      -- 
STREAM_SELECT  |LOCAL|
+                                                                        -- 
NESTED_TUPLE_SOURCE  |LOCAL|
+                                                                  }
                                                             -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                              -- 
PRE_CLUSTERED_GROUP_BY[$$97]  |PARTITIONED|
-                                                                      {
-                                                                        -- 
AGGREGATE  |LOCAL|
-                                                                          -- 
STREAM_SELECT  |LOCAL|
-                                                                            -- 
NESTED_TUPLE_SOURCE  |LOCAL|
-                                                                      }
-                                                                -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                  -- 
STABLE_SORT [$$97(ASC), $$i(ASC)]  |PARTITIONED|
-                                                                    -- 
HASH_PARTITION_EXCHANGE [$$97]  |PARTITIONED|
-                                                                      -- 
STREAM_PROJECT  |PARTITIONED|
+                                                              -- STABLE_SORT 
[$$97(ASC), $$i(ASC)]  |PARTITIONED|
+                                                                -- 
HASH_PARTITION_EXCHANGE [$$97]  |PARTITIONED|
+                                                                  -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                    -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                      -- 
HYBRID_HASH_JOIN [$$tokenUnranked][$$tokenGroupped]  |PARTITIONED|
                                                                         -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                          -- 
HYBRID_HASH_JOIN [$$tokenUnranked][$$tokenGroupped]  |PARTITIONED|
+                                                                          -- 
REPLICATE  |PARTITIONED|
                                                                             -- 
HASH_PARTITION_EXCHANGE [$$tokenUnranked]  |PARTITIONED|
                                                                               
-- STREAM_PROJECT  |PARTITIONED|
                                                                                
 -- UNNEST  |PARTITIONED|
@@ -119,19 +124,21 @@
                                                                                
           -- DATASOURCE_SCAN  |PARTITIONED|
                                                                                
             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                                
               -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                                            -- 
HASH_PARTITION_EXCHANGE [$$tokenGroupped]  |PARTITIONED|
-                                                                              
-- ASSIGN  |PARTITIONED|
-                                                                               
 -- RUNNING_AGGREGATE  |PARTITIONED|
-                                                                               
   -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
     -- SORT_MERGE_EXCHANGE [$$102(ASC), $$tokenGroupped(ASC) ]  |PARTITIONED|
-                                                                               
       -- STABLE_SORT [$$102(ASC), $$tokenGroupped(ASC)]  |PARTITIONED|
-                                                                               
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
           -- SORT_GROUP_BY[$$130]  |PARTITIONED|
-                                                                               
                   {
-                                                                               
                     -- AGGREGATE  |LOCAL|
-                                                                               
                       -- NESTED_TUPLE_SOURCE  |LOCAL|
-                                                                               
                   }
-                                                                               
             -- HASH_PARTITION_EXCHANGE [$$130]  |PARTITIONED|
+                                                                        -- 
HASH_PARTITION_EXCHANGE [$$tokenGroupped]  |PARTITIONED|
+                                                                          -- 
ASSIGN  |PARTITIONED|
+                                                                            -- 
RUNNING_AGGREGATE  |PARTITIONED|
+                                                                              
-- STREAM_PROJECT  |PARTITIONED|
+                                                                               
 -- SORT_MERGE_EXCHANGE [$$102(ASC), $$tokenGroupped(ASC) ]  |PARTITIONED|
+                                                                               
   -- STABLE_SORT [$$102(ASC), $$tokenGroupped(ASC)]  |PARTITIONED|
+                                                                               
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
       -- SORT_GROUP_BY[$$130]  |PARTITIONED|
+                                                                               
               {
+                                                                               
                 -- AGGREGATE  |LOCAL|
+                                                                               
                   -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                                                               
               }
+                                                                               
         -- HASH_PARTITION_EXCHANGE [$$130]  |PARTITIONED|
+                                                                               
           -- REPLICATE  |PARTITIONED|
+                                                                               
             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                                
               -- SORT_GROUP_BY[$$token]  |PARTITIONED|
                                                                                
                       {
                                                                                
                         -- AGGREGATE  |LOCAL|

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/dc7e68a0/asterixdb/asterix-app/src/test/resources/optimizerts/results/subquery/query-ASTERIXDB-1572.plan
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/subquery/query-ASTERIXDB-1572.plan
 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/subquery/query-ASTERIXDB-1572.plan
index 6c9c457..6a9d39c 100644
--- 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/subquery/query-ASTERIXDB-1572.plan
+++ 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/subquery/query-ASTERIXDB-1572.plan
@@ -17,7 +17,7 @@
                       -- STREAM_PROJECT  |PARTITIONED|
                         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                           -- HYBRID_HASH_JOIN [$$44][$#4]  |PARTITIONED|
-                            -- HASH_PARTITION_EXCHANGE [$$44]  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                               -- PRE_CLUSTERED_GROUP_BY[$$42]  |PARTITIONED|
                                       {
                                         -- AGGREGATE  |LOCAL|
@@ -25,53 +25,51 @@
                                             -- NESTED_TUPLE_SOURCE  |LOCAL|
                                       }
                                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                  -- STABLE_SORT [$$42(ASC)]  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
                                     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                      -- STREAM_PROJECT  |PARTITIONED|
+                                      -- HYBRID_HASH_JOIN [$$42][$#3]  
|PARTITIONED|
                                         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                          -- HYBRID_HASH_JOIN [$$42][$#3]  
|PARTITIONED|
-                                            -- HASH_PARTITION_EXCHANGE [$$42]  
|PARTITIONED|
-                                              -- PRE_CLUSTERED_GROUP_BY[$$40]  
|PARTITIONED|
-                                                      {
-                                                        -- AGGREGATE  |LOCAL|
-                                                          -- STREAM_SELECT  
|LOCAL|
-                                                            -- 
NESTED_TUPLE_SOURCE  |LOCAL|
-                                                      }
+                                          -- PRE_CLUSTERED_GROUP_BY[$$40]  
|PARTITIONED|
+                                                  {
+                                                    -- AGGREGATE  |LOCAL|
+                                                      -- STREAM_SELECT  |LOCAL|
+                                                        -- NESTED_TUPLE_SOURCE 
 |LOCAL|
+                                                  }
+                                            -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
+                                              -- STABLE_SORT [$$40(ASC)]  
|PARTITIONED|
                                                 -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                  -- STABLE_SORT [$$40(ASC)]  
|PARTITIONED|
+                                                  -- STREAM_PROJECT  
|PARTITIONED|
                                                     -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                      -- STREAM_PROJECT  
|PARTITIONED|
+                                                      -- HYBRID_HASH_JOIN 
[$$40][$#2]  |PARTITIONED|
                                                         -- ONE_TO_ONE_EXCHANGE 
 |PARTITIONED|
-                                                          -- HYBRID_HASH_JOIN 
[$$40][$#2]  |PARTITIONED|
-                                                            -- 
HASH_PARTITION_EXCHANGE [$$40]  |PARTITIONED|
-                                                              -- 
PRE_CLUSTERED_GROUP_BY[$$33]  |PARTITIONED|
-                                                                      {
-                                                                        -- 
AGGREGATE  |LOCAL|
-                                                                          -- 
STREAM_SELECT  |LOCAL|
-                                                                            -- 
NESTED_TUPLE_SOURCE  |LOCAL|
-                                                                      }
+                                                          -- 
PRE_CLUSTERED_GROUP_BY[$$33]  |PARTITIONED|
+                                                                  {
+                                                                    -- 
AGGREGATE  |LOCAL|
+                                                                      -- 
STREAM_SELECT  |LOCAL|
+                                                                        -- 
NESTED_TUPLE_SOURCE  |LOCAL|
+                                                                  }
+                                                            -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                              -- 
STREAM_PROJECT  |PARTITIONED|
                                                                 -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                  -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                  -- 
HYBRID_HASH_JOIN [$$33][$#1]  |PARTITIONED|
                                                                     -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                      -- 
HYBRID_HASH_JOIN [$$33][$#1]  |PARTITIONED|
+                                                                      -- 
STREAM_PROJECT  |PARTITIONED|
                                                                         -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                          -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                          -- 
DATASOURCE_SCAN  |PARTITIONED|
                                                                             -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                              
-- DATASOURCE_SCAN  |PARTITIONED|
-                                                                               
 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
   -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                                        -- 
HASH_PARTITION_EXCHANGE [$#1]  |PARTITIONED|
-                                                                          -- 
ASSIGN  |UNPARTITIONED|
-                                                                            -- 
UNNEST  |UNPARTITIONED|
-                                                                              
-- EMPTY_TUPLE_SOURCE  |UNPARTITIONED|
-                                                            -- 
HASH_PARTITION_EXCHANGE [$#2]  |PARTITIONED|
-                                                              -- ASSIGN  
|UNPARTITIONED|
-                                                                -- UNNEST  
|UNPARTITIONED|
-                                                                  -- 
EMPTY_TUPLE_SOURCE  |UNPARTITIONED|
-                                            -- HASH_PARTITION_EXCHANGE [$#3]  
|PARTITIONED|
-                                              -- ASSIGN  |UNPARTITIONED|
-                                                -- UNNEST  |UNPARTITIONED|
-                                                  -- EMPTY_TUPLE_SOURCE  
|UNPARTITIONED|
+                                                                              
-- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                                                    -- 
HASH_PARTITION_EXCHANGE [$#1]  |PARTITIONED|
+                                                                      -- 
ASSIGN  |UNPARTITIONED|
+                                                                        -- 
UNNEST  |UNPARTITIONED|
+                                                                          -- 
EMPTY_TUPLE_SOURCE  |UNPARTITIONED|
+                                                        -- 
HASH_PARTITION_EXCHANGE [$#2]  |PARTITIONED|
+                                                          -- ASSIGN  
|UNPARTITIONED|
+                                                            -- UNNEST  
|UNPARTITIONED|
+                                                              -- 
EMPTY_TUPLE_SOURCE  |UNPARTITIONED|
+                                        -- HASH_PARTITION_EXCHANGE [$#3]  
|PARTITIONED|
+                                          -- ASSIGN  |UNPARTITIONED|
+                                            -- UNNEST  |UNPARTITIONED|
+                                              -- EMPTY_TUPLE_SOURCE  
|UNPARTITIONED|
                             -- HASH_PARTITION_EXCHANGE [$#4]  |PARTITIONED|
                               -- ASSIGN  |UNPARTITIONED|
                                 -- UNNEST  |UNPARTITIONED|

http://git-wip-us.apache.org/repos/asf/asterixdb/blob/dc7e68a0/asterixdb/asterix-app/src/test/resources/optimizerts/results/tpcds/query-ASTERIXDB-1581-correlated.plan
----------------------------------------------------------------------
diff --git 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/tpcds/query-ASTERIXDB-1581-correlated.plan
 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/tpcds/query-ASTERIXDB-1581-correlated.plan
index 5ac6b62..babbeeb 100644
--- 
a/asterixdb/asterix-app/src/test/resources/optimizerts/results/tpcds/query-ASTERIXDB-1581-correlated.plan
+++ 
b/asterixdb/asterix-app/src/test/resources/optimizerts/results/tpcds/query-ASTERIXDB-1581-correlated.plan
@@ -18,184 +18,223 @@
                                         -- NESTED_TUPLE_SOURCE  |LOCAL|
                             }
                       -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                        -- STABLE_SORT [$$95(ASC)]  |PARTITIONED|
+                        -- STREAM_PROJECT  |PARTITIONED|
                           -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                            -- STREAM_PROJECT  |PARTITIONED|
+                            -- HYBRID_HASH_JOIN [$$95][$$96]  |PARTITIONED|
                               -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                -- HYBRID_HASH_JOIN [$$95][$$96]  |PARTITIONED|
-                                  -- HASH_PARTITION_EXCHANGE [$$95]  
|PARTITIONED|
-                                    -- PRE_CLUSTERED_GROUP_BY[$$83]  
|PARTITIONED|
-                                            {
-                                              -- AGGREGATE  |LOCAL|
+                                -- PRE_CLUSTERED_GROUP_BY[$$83]  |PARTITIONED|
+                                        {
+                                          -- AGGREGATE  |LOCAL|
+                                            -- AGGREGATE  |LOCAL|
+                                              -- ASSIGN  |LOCAL|
                                                 -- AGGREGATE  |LOCAL|
-                                                  -- ASSIGN  |LOCAL|
-                                                    -- AGGREGATE  |LOCAL|
-                                                      -- STREAM_SELECT  |LOCAL|
-                                                        -- NESTED_TUPLE_SOURCE 
 |LOCAL|
-                                            }
+                                                  -- STREAM_SELECT  |LOCAL|
+                                                    -- NESTED_TUPLE_SOURCE  
|LOCAL|
+                                        }
+                                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                    -- STABLE_SORT [$$83(ASC)]  |PARTITIONED|
                                       -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                        -- STABLE_SORT [$$83(ASC)]  
|PARTITIONED|
+                                        -- STREAM_PROJECT  |PARTITIONED|
                                           -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                            -- STREAM_PROJECT  |PARTITIONED|
+                                            -- HYBRID_HASH_JOIN [$$83][$$84]  
|PARTITIONED|
                                               -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                -- HYBRID_HASH_JOIN 
[$$83][$$84]  |PARTITIONED|
-                                                  -- HASH_PARTITION_EXCHANGE 
[$$83]  |PARTITIONED|
-                                                    -- 
PRE_CLUSTERED_GROUP_BY[$$63]  |PARTITIONED|
-                                                            {
-                                                              -- AGGREGATE  
|LOCAL|
-                                                                -- AGGREGATE  
|LOCAL|
-                                                                  -- 
STREAM_SELECT  |LOCAL|
-                                                                    -- 
NESTED_TUPLE_SOURCE  |LOCAL|
-                                                            }
+                                                -- 
PRE_CLUSTERED_GROUP_BY[$$63]  |PARTITIONED|
+                                                        {
+                                                          -- AGGREGATE  |LOCAL|
+                                                            -- AGGREGATE  
|LOCAL|
+                                                              -- STREAM_SELECT 
 |LOCAL|
+                                                                -- 
NESTED_TUPLE_SOURCE  |LOCAL|
+                                                        }
+                                                  -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
+                                                    -- STREAM_PROJECT  
|PARTITIONED|
                                                       -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                        -- STREAM_PROJECT  
|PARTITIONED|
+                                                        -- HYBRID_HASH_JOIN 
[$$63][$$73]  |PARTITIONED|
                                                           -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                            -- 
HYBRID_HASH_JOIN [$$63][$$73]  |PARTITIONED|
+                                                            -- STREAM_PROJECT  
|PARTITIONED|
                                                               -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                 -- 
STREAM_PROJECT  |PARTITIONED|
                                                                   -- ASSIGN  
|PARTITIONED|
                                                                     -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                       -- 
REPLICATE  |PARTITIONED|
                                                                         -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                          -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                            -- 
ASSIGN  |PARTITIONED|
-                                                                              
-- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
 -- REPLICATE  |PARTITIONED|
-                                                                               
   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
     -- BTREE_SEARCH  |PARTITIONED|
-                                                                               
       -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
         -- ASSIGN  |PARTITIONED|
-                                                                               
           -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                              -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                  -- ASSIGN  
|PARTITIONED|
-                                                                    -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                      -- 
REPLICATE  |PARTITIONED|
-                                                                        -- 
HASH_PARTITION_EXCHANGE [$$120]  |PARTITIONED|
-                                                                          -- 
ASSIGN  |PARTITIONED|
-                                                                            -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                          -- 
BTREE_SEARCH  |PARTITIONED|
+                                                                            -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                               
-- ASSIGN  |PARTITIONED|
+                                                                               
 -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                                          -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                            -- STREAM_PROJECT  
|PARTITIONED|
+                                                              -- ASSIGN  
|PARTITIONED|
+                                                                -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                  -- REPLICATE 
 |PARTITIONED|
+                                                                    -- 
HASH_PARTITION_EXCHANGE [$$120]  |PARTITIONED|
+                                                                      -- 
ASSIGN  |PARTITIONED|
+                                                                        -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                          -- 
ASSIGN  |PARTITIONED|
+                                                                            -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                              
-- REPLICATE  |PARTITIONED|
                                                                                
 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
   -- REPLICATE  |PARTITIONED|
+                                                                               
   -- STREAM_PROJECT  |PARTITIONED|
                                                                                
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
       -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
       -- DATASOURCE_SCAN  |PARTITIONED|
                                                                                
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
           -- DATASOURCE_SCAN  |PARTITIONED|
-                                                                               
             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
               -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                  -- HASH_PARTITION_EXCHANGE 
[$$84]  |PARTITIONED|
-                                                    -- ASSIGN  |PARTITIONED|
-                                                      -- STREAM_PROJECT  
|PARTITIONED|
-                                                        -- ONE_TO_ONE_EXCHANGE 
 |PARTITIONED|
-                                                          -- HYBRID_HASH_JOIN 
[$$77][$$76]  |PARTITIONED|
-                                                            -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
           -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                              -- HASH_PARTITION_EXCHANGE 
[$$84]  |PARTITIONED|
+                                                -- ASSIGN  |PARTITIONED|
+                                                  -- STREAM_PROJECT  
|PARTITIONED|
+                                                    -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
+                                                      -- HYBRID_HASH_JOIN 
[$$77][$$76]  |PARTITIONED|
+                                                        -- 
HASH_PARTITION_EXCHANGE [$$77]  |PARTITIONED|
+                                                          -- STREAM_PROJECT  
|PARTITIONED|
+                                                            -- ASSIGN  
|PARTITIONED|
                                                               -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                -- ASSIGN  
|PARTITIONED|
+                                                                -- 
STREAM_SELECT  |PARTITIONED|
                                                                   -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                    -- 
REPLICATE  |PARTITIONED|
-                                                                      -- 
HASH_PARTITION_EXCHANGE [$$114]  |PARTITIONED|
+                                                                    -- 
PRE_CLUSTERED_GROUP_BY[$$85]  |PARTITIONED|
+                                                                            {
+                                                                              
-- AGGREGATE  |LOCAL|
+                                                                               
 -- AGGREGATE  |LOCAL|
+                                                                               
   -- STREAM_SELECT  |LOCAL|
+                                                                               
     -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                                                            }
+                                                                      -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                         -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                          -- 
ASSIGN  |PARTITIONED|
-                                                                            -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                              
-- STREAM_SELECT  |PARTITIONED|
-                                                                               
 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
   -- PRE_CLUSTERED_GROUP_BY[$$119]  |PARTITIONED|
-                                                                               
           {
-                                                                               
             -- AGGREGATE  |LOCAL|
-                                                                               
               -- AGGREGATE  |LOCAL|
-                                                                               
                 -- STREAM_SELECT  |LOCAL|
-                                                                               
                   -- NESTED_TUPLE_SOURCE  |LOCAL|
-                                                                               
           }
+                                                                          -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                            -- 
HYBRID_HASH_JOIN [$$85][$$87]  |PARTITIONED|
+                                                                              
-- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
 -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
   -- ASSIGN  |PARTITIONED|
                                                                                
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
       -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
       -- REPLICATE  |PARTITIONED|
                                                                                
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
           -- HYBRID_HASH_JOIN [$$119][$$120]  |PARTITIONED|
+                                                                               
           -- BTREE_SEARCH  |PARTITIONED|
                                                                                
             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
               -- REPLICATE  |PARTITIONED|
+                                                                               
               -- ASSIGN  |PARTITIONED|
+                                                                               
                 -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                                                              
-- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
 -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
   -- ASSIGN  |PARTITIONED|
+                                                                               
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
       -- REPLICATE  |PARTITIONED|
+                                                                               
         -- HASH_PARTITION_EXCHANGE [$$120]  |PARTITIONED|
+                                                                               
           -- ASSIGN  |PARTITIONED|
+                                                                               
             -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
               -- ASSIGN  |PARTITIONED|
                                                                                
                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                   -- BTREE_SEARCH  |PARTITIONED|
+                                                                               
                   -- REPLICATE  |PARTITIONED|
                                                                                
                     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                       -- ASSIGN  |PARTITIONED|
-                                                                               
                         -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                                               
             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
               -- REPLICATE  |PARTITIONED|
-                                                                               
                 -- HASH_PARTITION_EXCHANGE [$$120]  |PARTITIONED|
-                                                                               
                   -- ASSIGN  |PARTITIONED|
-                                                                               
                     -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
                       -- ASSIGN  |PARTITIONED|
+                                                                               
                       -- STREAM_PROJECT  |PARTITIONED|
                                                                                
                         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                           -- REPLICATE  |PARTITIONED|
+                                                                               
                           -- DATASOURCE_SCAN  |PARTITIONED|
                                                                                
                             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                               -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
                                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                                   -- DATASOURCE_SCAN  |PARTITIONED|
-                                                                               
                                     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                                       -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                            -- 
HASH_PARTITION_EXCHANGE [$$76]  |PARTITIONED|
+                                                                               
                               -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                                        -- 
HASH_PARTITION_EXCHANGE [$$76]  |PARTITIONED|
+                                                          -- STREAM_PROJECT  
|PARTITIONED|
+                                                            -- ASSIGN  
|PARTITIONED|
                                                               -- 
STREAM_PROJECT  |PARTITIONED|
                                                                 -- ASSIGN  
|PARTITIONED|
-                                                                  -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                    -- ASSIGN  
|PARTITIONED|
+                                                                  -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                    -- 
REPLICATE  |PARTITIONED|
                                                                       -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                        -- 
REPLICATE  |PARTITIONED|
+                                                                        -- 
STREAM_PROJECT  |PARTITIONED|
                                                                           -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                            -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                            -- 
DATASOURCE_SCAN  |PARTITIONED|
                                                                               
-- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
 -- DATASOURCE_SCAN  |PARTITIONED|
-                                                                               
   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
     -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                  -- HASH_PARTITION_EXCHANGE [$$96]  
|PARTITIONED|
-                                    -- ASSIGN  |PARTITIONED|
-                                      -- STREAM_PROJECT  |PARTITIONED|
-                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                          -- HYBRID_HASH_JOIN [$$79][$$78]  
|PARTITIONED|
-                                            -- HASH_PARTITION_EXCHANGE [$$79]  
|PARTITIONED|
-                                              -- PRE_CLUSTERED_GROUP_BY[$$97]  
|PARTITIONED|
-                                                      {
+                                                                               
 -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                              -- HASH_PARTITION_EXCHANGE [$$96]  |PARTITIONED|
+                                -- ASSIGN  |PARTITIONED|
+                                  -- STREAM_PROJECT  |PARTITIONED|
+                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                      -- HYBRID_HASH_JOIN [$$79][$$78]  
|PARTITIONED|
+                                        -- HASH_PARTITION_EXCHANGE [$$79]  
|PARTITIONED|
+                                          -- PRE_CLUSTERED_GROUP_BY[$$97]  
|PARTITIONED|
+                                                  {
+                                                    -- AGGREGATE  |LOCAL|
+                                                      -- AGGREGATE  |LOCAL|
                                                         -- AGGREGATE  |LOCAL|
-                                                          -- AGGREGATE  |LOCAL|
-                                                            -- AGGREGATE  
|LOCAL|
-                                                              -- STREAM_SELECT 
 |LOCAL|
-                                                                -- 
NESTED_TUPLE_SOURCE  |LOCAL|
-                                                      }
+                                                          -- STREAM_SELECT  
|LOCAL|
+                                                            -- 
NESTED_TUPLE_SOURCE  |LOCAL|
+                                                  }
+                                            -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
+                                              -- STABLE_SORT [$$97(ASC)]  
|PARTITIONED|
                                                 -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                  -- STABLE_SORT [$$97(ASC)]  
|PARTITIONED|
+                                                  -- STREAM_PROJECT  
|PARTITIONED|
                                                     -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                      -- STREAM_PROJECT  
|PARTITIONED|
+                                                      -- HYBRID_HASH_JOIN 
[$$97][$$100]  |PARTITIONED|
                                                         -- ONE_TO_ONE_EXCHANGE 
 |PARTITIONED|
-                                                          -- HYBRID_HASH_JOIN 
[$$97][$$100]  |PARTITIONED|
-                                                            -- 
HASH_PARTITION_EXCHANGE [$$97]  |PARTITIONED|
+                                                          -- STREAM_PROJECT  
|PARTITIONED|
+                                                            -- STREAM_SELECT  
|PARTITIONED|
                                                               -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                -- 
STREAM_SELECT  |PARTITIONED|
-                                                                  -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                    -- ASSIGN  
|PARTITIONED|
+                                                                -- ASSIGN  
|PARTITIONED|
+                                                                  -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                    -- 
PRE_CLUSTERED_GROUP_BY[$$101]  |PARTITIONED|
+                                                                            {
+                                                                              
-- AGGREGATE  |LOCAL|
+                                                                               
 -- AGGREGATE  |LOCAL|
+                                                                               
   -- STREAM_SELECT  |LOCAL|
+                                                                               
     -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                                                            }
                                                                       -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                        -- 
PRE_CLUSTERED_GROUP_BY[$$101]  |PARTITIONED|
-                                                                               
 {
-                                                                               
   -- AGGREGATE  |LOCAL|
-                                                                               
     -- AGGREGATE  |LOCAL|
-                                                                               
       -- STREAM_SELECT  |LOCAL|
-                                                                               
         -- NESTED_TUPLE_SOURCE  |LOCAL|
-                                                                               
 }
+                                                                        -- 
STREAM_PROJECT  |PARTITIONED|
                                                                           -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                            -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                            -- 
HYBRID_HASH_JOIN [$$101][$$102]  |PARTITIONED|
                                                                               
-- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
 -- HYBRID_HASH_JOIN [$$101][$$102]  |PARTITIONED|
+                                                                               
 -- STREAM_PROJECT  |PARTITIONED|
                                                                                
   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
     -- REPLICATE  |PARTITIONED|
-                                                                               
       -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
         -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
           -- ASSIGN  |PARTITIONED|
+                                                                               
     -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
       -- ASSIGN  |PARTITIONED|
+                                                                               
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
           -- REPLICATE  |PARTITIONED|
                                                                                
             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
               -- REPLICATE  |PARTITIONED|
+                                                                               
               -- BTREE_SEARCH  |PARTITIONED|
                                                                                
                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                   -- BTREE_SEARCH  |PARTITIONED|
+                                                                               
                   -- ASSIGN  |PARTITIONED|
+                                                                               
                     -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                                                              
-- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
 -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
   -- ASSIGN  |PARTITIONED|
+                                                                               
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
       -- REPLICATE  |PARTITIONED|
+                                                                               
         -- HASH_PARTITION_EXCHANGE [$$120]  |PARTITIONED|
+                                                                               
           -- ASSIGN  |PARTITIONED|
+                                                                               
             -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
               -- ASSIGN  |PARTITIONED|
+                                                                               
                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
                   -- REPLICATE  |PARTITIONED|
                                                                                
                     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                       -- ASSIGN  |PARTITIONED|
-                                                                               
                         -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                                               
   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
     -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
       -- ASSIGN  |PARTITIONED|
+                                                                               
                       -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
                         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
                           -- DATASOURCE_SCAN  |PARTITIONED|
+                                                                               
                             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
                               -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                                        -- 
HASH_PARTITION_EXCHANGE [$$100]  |PARTITIONED|
+                                                          -- ASSIGN  
|PARTITIONED|
+                                                            -- STREAM_PROJECT  
|PARTITIONED|
+                                                              -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                -- 
HYBRID_HASH_JOIN [$$114][$$113]  |PARTITIONED|
+                                                                  -- 
HASH_PARTITION_EXCHANGE [$$114]  |PARTITIONED|
+                                                                    -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                      -- 
ASSIGN  |PARTITIONED|
+                                                                        -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                          -- 
STREAM_SELECT  |PARTITIONED|
+                                                                            -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                              
-- PRE_CLUSTERED_GROUP_BY[$$119]  |PARTITIONED|
+                                                                               
       {
+                                                                               
         -- AGGREGATE  |LOCAL|
+                                                                               
           -- AGGREGATE  |LOCAL|
+                                                                               
             -- STREAM_SELECT  |LOCAL|
+                                                                               
               -- NESTED_TUPLE_SOURCE  |LOCAL|
+                                                                               
       }
+                                                                               
 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
   -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
       -- HYBRID_HASH_JOIN [$$119][$$120]  |PARTITIONED|
+                                                                               
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
           -- REPLICATE  |PARTITIONED|
+                                                                               
             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
               -- BTREE_SEARCH  |PARTITIONED|
+                                                                               
                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                               
                   -- ASSIGN  |PARTITIONED|
+                                                                               
                     -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
                                                                                
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                                
           -- REPLICATE  |PARTITIONED|
                                                                                
             -- HASH_PARTITION_EXCHANGE [$$120]  |PARTITIONED|
@@ -210,72 +249,27 @@
                                                                                
                               -- DATASOURCE_SCAN  |PARTITIONED|
                                                                                
                                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                                                                
                                   -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                            -- 
HASH_PARTITION_EXCHANGE [$$100]  |PARTITIONED|
-                                                              -- ASSIGN  
|PARTITIONED|
-                                                                -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                  -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                    -- 
HYBRID_HASH_JOIN [$$114][$$113]  |PARTITIONED|
-                                                                      -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                        -- 
REPLICATE  |PARTITIONED|
-                                                                          -- 
HASH_PARTITION_EXCHANGE [$$114]  |PARTITIONED|
-                                                                            -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                              
-- ASSIGN  |PARTITIONED|
-                                                                               
 -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
   -- STREAM_SELECT  |PARTITIONED|
-                                                                               
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
       -- PRE_CLUSTERED_GROUP_BY[$$119]  |PARTITIONED|
-                                                                               
               {
-                                                                               
                 -- AGGREGATE  |LOCAL|
-                                                                               
                   -- AGGREGATE  |LOCAL|
-                                                                               
                     -- STREAM_SELECT  |LOCAL|
-                                                                               
                       -- NESTED_TUPLE_SOURCE  |LOCAL|
-                                                                               
               }
-                                                                               
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
           -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
               -- HYBRID_HASH_JOIN [$$119][$$120]  |PARTITIONED|
-                                                                               
                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                   -- REPLICATE  |PARTITIONED|
-                                                                               
                     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                       -- BTREE_SEARCH  |PARTITIONED|
-                                                                               
                         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                           -- ASSIGN  |PARTITIONED|
-                                                                               
                             -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                                               
                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                   -- REPLICATE  |PARTITIONED|
-                                                                               
                     -- HASH_PARTITION_EXCHANGE [$$120]  |PARTITIONED|
-                                                                               
                       -- ASSIGN  |PARTITIONED|
-                                                                               
                         -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
                           -- ASSIGN  |PARTITIONED|
-                                                                               
                             -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                               -- REPLICATE  |PARTITIONED|
-                                                                               
                                 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                                   -- STREAM_PROJECT  |PARTITIONED|
-                                                                               
                                     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                                       -- DATASOURCE_SCAN  |PARTITIONED|
-                                                                               
                                         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
                                           -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                                                      -- 
HASH_PARTITION_EXCHANGE [$$113]  |PARTITIONED|
-                                                                        -- 
STREAM_PROJECT  |PARTITIONED|
-                                                                          -- 
ASSIGN  |PARTITIONED|
+                                                                  -- 
HASH_PARTITION_EXCHANGE [$$113]  |PARTITIONED|
+                                                                    -- 
STREAM_PROJECT  |PARTITIONED|
+                                                                      -- 
ASSIGN  |PARTITIONED|
+                                                                        -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                                          -- 
REPLICATE  |PARTITIONED|
                                                                             -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                              
-- REPLICATE  |PARTITIONED|
+                                                                              
-- STREAM_PROJECT  |PARTITIONED|
                                                                                
 -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
   -- STREAM_PROJECT  |PARTITIONED|
+                                                                               
   -- DATASOURCE_SCAN  |PARTITIONED|
                                                                                
     -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
       -- DATASOURCE_SCAN  |PARTITIONED|
-                                                                               
         -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                               
           -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
-                                            -- HASH_PARTITION_EXCHANGE [$$78]  
|PARTITIONED|
+                                                                               
       -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                        -- HASH_PARTITION_EXCHANGE [$$78]  
|PARTITIONED|
+                                          -- STREAM_PROJECT  |PARTITIONED|
+                                            -- ASSIGN  |PARTITIONED|
                                               -- STREAM_PROJECT  |PARTITIONED|
                                                 -- ASSIGN  |PARTITIONED|
-                                                  -- STREAM_PROJECT  
|PARTITIONED|
-                                                    -- ASSIGN  |PARTITIONED|
+                                                  -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
+                                                    -- REPLICATE  |PARTITIONED|
                                                       -- ONE_TO_ONE_EXCHANGE  
|PARTITIONED|
-                                                        -- REPLICATE  
|PARTITIONED|
+                                                        -- STREAM_PROJECT  
|PARTITIONED|
                                                           -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                            -- STREAM_PROJECT  
|PARTITIONED|
+                                                            -- DATASOURCE_SCAN 
 |PARTITIONED|
                                                               -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                -- 
DATASOURCE_SCAN  |PARTITIONED|
-                                                                  -- 
ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                                                                    -- 
EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                                                -- 
EMPTY_TUPLE_SOURCE  |PARTITIONED|

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