diff --git a/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_01.aql b/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_01.aql
new file mode 100644
index 0000000..bf9aea3
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_01.aql
@@ -0,0 +1,62 @@
+/*
+ * 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.
+ */
+/*
+ *  Description     : This test is intended to verify that the primary BTree index is used
+ *                  : in the optimized query plan and LIMIT push-down is applied on an external sort with a non primary key field.
+ *  Expected Result : Success
+ */
+
+// Please note this is a Positive test and the BTree index should be used in the plan.
+
+drop dataverse test if exists;
+create dataverse test;
+use dataverse test;
+
+write output to asterix_nc1:"rttest/orderby_limit_01.adm";
+
+create type MyRecord as closed {
+  id: int64,
+  docid: int64,
+  val1: int64,
+  title: string,
+  point: point,
+  kwds: string,
+  line1: line,
+  line2: line,
+  poly1: polygon,
+  poly2: polygon,
+  rec: rectangle,
+  circle: circle
+}
+
+create dataset MyData(MyRecord)
+  primary key id;
+
+create index btree_index_docid on MyData(docid) type btree;
+create index btree_index_val1 on MyData(val1) type btree;
+create index rtree_index_point on MyData(point) type rtree;
+create index rtree_index_rec on MyData(rec) type rtree;
+create index ngram_index_title on MyData(title) type ngram(3);
+create index keyword_index_title on MyData(title) type keyword;
+
+for $o in dataset('MyData')
+where $o.id < 50
+order by $o.docid
+limit 2
+return {"pk":$o.id, "sk":$o.docid}
diff --git a/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_offset_01.aql b/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_offset_01.aql
new file mode 100644
index 0000000..9059c35
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_offset_01.aql
@@ -0,0 +1,62 @@
+/*
+ * 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.
+ */
+/*
+ *  Description     : This test is intended to verify that the primary BTree index is used
+ *                  : in the optimized query plan and LIMIT with an offset push-down is applied on an external sort with a non primary key field..
+ *  Expected Result : Success
+ */
+
+// Please note this is a Positive test and the BTree index should be used in the plan.
+
+drop dataverse test if exists;
+create dataverse test;
+use dataverse test;
+
+write output to asterix_nc1:"rttest/orderby_limit_offset_01.adm";
+
+create type MyRecord as closed {
+  id: int64,
+  docid: int64,
+  val1: int64,
+  title: string,
+  point: point,
+  kwds: string,
+  line1: line,
+  line2: line,
+  poly1: polygon,
+  poly2: polygon,
+  rec: rectangle,
+  circle: circle
+}
+
+create dataset MyData(MyRecord)
+  primary key id;
+
+create index btree_index_docid on MyData(docid) type btree;
+create index btree_index_val1 on MyData(val1) type btree;
+create index rtree_index_point on MyData(point) type rtree;
+create index rtree_index_rec on MyData(rec) type rtree;
+create index ngram_index_title on MyData(title) type ngram(3);
+create index keyword_index_title on MyData(title) type keyword;
+
+for $o in dataset('MyData')
+where $o.id < 50
+order by $o.docid
+limit 2 offset 2
+return {"pk":$o.id, "sk":$o.docid}
diff --git a/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_primary_index_01.aql b/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_primary_index_01.aql
new file mode 100644
index 0000000..429cf09
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/queries/orderby_limit_primary_index_01.aql
@@ -0,0 +1,62 @@
+/*
+ * 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.
+ */
+/*
+ *  Description     : This test is intended to verify that the primary BTree index is used
+ *                  : in the optimized query plan and LIMIT push-down is applied on an external sort.
+ *  Expected Result : Success
+ */
+
+// Please note this is a Positive test and the BTree index should be used in the plan.
+
+drop dataverse test if exists;
+create dataverse test;
+use dataverse test;
+
+write output to asterix_nc1:"rttest/orderby_limit_primary_index_01.adm";
+
+create type MyRecord as closed {
+  id: int64,
+  docid: int64,
+  val1: int64,
+  title: string,
+  point: point,
+  kwds: string,
+  line1: line,
+  line2: line,
+  poly1: polygon,
+  poly2: polygon,
+  rec: rectangle,
+  circle: circle
+}
+
+create dataset MyData(MyRecord)
+  primary key id;
+
+create index btree_index_docid on MyData(docid) type btree;
+create index btree_index_val1 on MyData(val1) type btree;
+create index rtree_index_point on MyData(point) type rtree;
+create index rtree_index_rec on MyData(rec) type rtree;
+create index ngram_index_title on MyData(title) type ngram(3);
+create index keyword_index_title on MyData(title) type keyword;
+
+for $o in dataset('MyData')
+where $o.id < 50
+order by $o.id
+limit 2
+return {"pk":$o.id, "sk":$o.docid}
diff --git a/asterix-app/src/test/resources/optimizerts/results/btree-index/btree-primary-limit-orderby-01.plan b/asterix-app/src/test/resources/optimizerts/results/btree-index/btree-primary-limit-orderby-01.plan
new file mode 100644
index 0000000..e5eca71
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/results/btree-index/btree-primary-limit-orderby-01.plan
@@ -0,0 +1,17 @@
+-- DISTRIBUTE_RESULT  |UNPARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
+    -- STREAM_PROJECT  |UNPARTITIONED|
+      -- ASSIGN  |UNPARTITIONED|
+        -- STREAM_LIMIT  |UNPARTITIONED|
+          -- SORT_MERGE_EXCHANGE [$$10(ASC) ]  |PARTITIONED|
+            -- STREAM_LIMIT  |PARTITIONED|
+              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                -- STABLE_SORT [$$10(ASC)]  |PARTITIONED|
+                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- ASSIGN  |PARTITIONED|
+                                -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
diff --git a/asterix-app/src/test/resources/optimizerts/results/btree-index/btree-primary-limit-orderby-02.plan b/asterix-app/src/test/resources/optimizerts/results/btree-index/btree-primary-limit-orderby-02.plan
new file mode 100644
index 0000000..e7039b2
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/results/btree-index/btree-primary-limit-orderby-02.plan
@@ -0,0 +1,12 @@
+-- DISTRIBUTE_RESULT  |UNPARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
+    -- STREAM_PROJECT  |UNPARTITIONED|
+      -- ASSIGN  |UNPARTITIONED|
+        -- STREAM_LIMIT  |UNPARTITIONED|
+          -- SORT_MERGE_EXCHANGE [$$9(ASC) ]  |PARTITIONED|
+            -- STREAM_LIMIT  |PARTITIONED|
+              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                -- BTREE_SEARCH  |PARTITIONED|
+                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
diff --git a/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan b/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan
index 8b205d6..92f9a29 100644
--- a/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan
+++ b/asterix-app/src/test/resources/optimizerts/results/inlined_q18_large_volume_customer.plan
@@ -6,7 +6,7 @@
           -- SORT_MERGE_EXCHANGE [$$12(DESC), $$11(ASC) ]  |PARTITIONED|
             -- STREAM_LIMIT  |PARTITIONED|
               -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                -- STABLE_SORT [$$12(DESC), $$11(ASC)]  |PARTITIONED|
+                -- STABLE_SORT [topK: 100] [$$12(DESC), $$11(ASC)]  |PARTITIONED|
                   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                     -- PRE_CLUSTERED_GROUP_BY[$$72, $$73]  |PARTITIONED|
                             {
diff --git a/asterix-app/src/test/resources/optimizerts/results/orderby_limit_01.plan b/asterix-app/src/test/resources/optimizerts/results/orderby_limit_01.plan
new file mode 100644
index 0000000..6f139d6
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/results/orderby_limit_01.plan
@@ -0,0 +1,17 @@
+-- DISTRIBUTE_RESULT  |UNPARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
+    -- STREAM_PROJECT  |UNPARTITIONED|
+      -- ASSIGN  |UNPARTITIONED|
+        -- STREAM_LIMIT  |UNPARTITIONED|
+          -- SORT_MERGE_EXCHANGE [$$10(ASC) ]  |PARTITIONED|
+            -- STREAM_LIMIT  |PARTITIONED|
+              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                -- STABLE_SORT [topK: 2] [$$10(ASC)]  |PARTITIONED|
+                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- ASSIGN  |PARTITIONED|
+                                -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
diff --git a/asterix-app/src/test/resources/optimizerts/results/orderby_limit_offset_01.plan b/asterix-app/src/test/resources/optimizerts/results/orderby_limit_offset_01.plan
new file mode 100644
index 0000000..ee46a5c
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/results/orderby_limit_offset_01.plan
@@ -0,0 +1,17 @@
+-- DISTRIBUTE_RESULT  |UNPARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
+    -- STREAM_PROJECT  |UNPARTITIONED|
+      -- ASSIGN  |UNPARTITIONED|
+        -- STREAM_LIMIT  |UNPARTITIONED|
+          -- SORT_MERGE_EXCHANGE [$$10(ASC) ]  |PARTITIONED|
+            -- STREAM_LIMIT  |PARTITIONED|
+              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                -- STABLE_SORT [topK: 4] [$$10(ASC)]  |PARTITIONED|
+                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                    -- STREAM_PROJECT  |PARTITIONED|
+                      -- ASSIGN  |PARTITIONED|
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- BTREE_SEARCH  |PARTITIONED|
+                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                              -- ASSIGN  |PARTITIONED|
+                                -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
diff --git a/asterix-app/src/test/resources/optimizerts/results/orderby_limit_primary_index_01.plan b/asterix-app/src/test/resources/optimizerts/results/orderby_limit_primary_index_01.plan
new file mode 100644
index 0000000..e7039b2
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/results/orderby_limit_primary_index_01.plan
@@ -0,0 +1,12 @@
+-- DISTRIBUTE_RESULT  |UNPARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |UNPARTITIONED|
+    -- STREAM_PROJECT  |UNPARTITIONED|
+      -- ASSIGN  |UNPARTITIONED|
+        -- STREAM_LIMIT  |UNPARTITIONED|
+          -- SORT_MERGE_EXCHANGE [$$9(ASC) ]  |PARTITIONED|
+            -- STREAM_LIMIT  |PARTITIONED|
+              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                -- BTREE_SEARCH  |PARTITIONED|
+                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                    -- ASSIGN  |PARTITIONED|
+                      -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
diff --git a/asterix-app/src/test/resources/optimizerts/results/q03_shipping_priority.plan b/asterix-app/src/test/resources/optimizerts/results/q03_shipping_priority.plan
index 0618b41..c4c0c05 100644
--- a/asterix-app/src/test/resources/optimizerts/results/q03_shipping_priority.plan
+++ b/asterix-app/src/test/resources/optimizerts/results/q03_shipping_priority.plan
@@ -6,7 +6,7 @@
           -- SORT_MERGE_EXCHANGE [$$49(DESC), $$4(ASC) ]  |PARTITIONED|
             -- STREAM_LIMIT  |PARTITIONED|
               -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                -- STABLE_SORT [$$49(DESC), $$4(ASC)]  |PARTITIONED|
+                -- STABLE_SORT [topK: 10] [$$49(DESC), $$4(ASC)]  |PARTITIONED|
                   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                     -- EXTERNAL_GROUP_BY[$$55, $$56, $$57]  |PARTITIONED|
                             {
diff --git a/asterix-app/src/test/resources/optimizerts/results/q2.plan b/asterix-app/src/test/resources/optimizerts/results/q2.plan
index 14382c1..87aa995 100644
--- a/asterix-app/src/test/resources/optimizerts/results/q2.plan
+++ b/asterix-app/src/test/resources/optimizerts/results/q2.plan
@@ -6,7 +6,7 @@
           -- SORT_MERGE_EXCHANGE [$$26(DESC) ]  |PARTITIONED|
             -- STREAM_LIMIT  |PARTITIONED|
               -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                -- STABLE_SORT [$$26(DESC)]  |PARTITIONED|
+                -- STABLE_SORT [topK: 5] [$$26(DESC)]  |PARTITIONED|
                   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                     -- PRE_CLUSTERED_GROUP_BY[$$32]  |PARTITIONED|
                             {
diff --git a/asterix-app/src/test/resources/optimizerts/results/sort-cust.plan b/asterix-app/src/test/resources/optimizerts/results/sort-cust.plan
index 66e6049..6faec89 100644
--- a/asterix-app/src/test/resources/optimizerts/results/sort-cust.plan
+++ b/asterix-app/src/test/resources/optimizerts/results/sort-cust.plan
@@ -6,7 +6,7 @@
           -- SORT_MERGE_EXCHANGE [$$7(ASC) ]  |PARTITIONED|
             -- STREAM_LIMIT  |PARTITIONED|
               -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
-                -- STABLE_SORT [$$7(ASC)]  |PARTITIONED|
+                -- STABLE_SORT [topK: 10] [$$7(ASC)]  |PARTITIONED|
                   -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                     -- ASSIGN  |PARTITIONED|
                       -- STREAM_PROJECT  |PARTITIONED|