http://git-wip-us.apache.org/repos/asf/hive/blob/5f01dc42/ql/src/test/results/clientpositive/llap/cross_product_check_1.q.out
----------------------------------------------------------------------
diff --git 
a/ql/src/test/results/clientpositive/llap/cross_product_check_1.q.out 
b/ql/src/test/results/clientpositive/llap/cross_product_check_1.q.out
index 5556478..be303c4 100644
--- a/ql/src/test/results/clientpositive/llap/cross_product_check_1.q.out
+++ b/ql/src/test/results/clientpositive/llap/cross_product_check_1.q.out
@@ -14,6 +14,8 @@ POSTHOOK: type: CREATETABLE_AS_SELECT
 POSTHOOK: Input: default@src
 POSTHOOK: Output: database:default
 POSTHOOK: Output: default@A
+POSTHOOK: Lineage: a.key SIMPLE [(src)src.FieldSchema(name:key, type:string, 
comment:default), ]
+POSTHOOK: Lineage: a.value SIMPLE [(src)src.FieldSchema(name:value, 
type:string, comment:default), ]
 PREHOOK: query: create table B as
 select * from src
 limit 10
@@ -28,7 +30,9 @@ POSTHOOK: type: CREATETABLE_AS_SELECT
 POSTHOOK: Input: default@src
 POSTHOOK: Output: database:default
 POSTHOOK: Output: default@B
-Warning: Shuffle Join MERGEJOIN[11][tables = [$hdt$_0, $hdt$_1]] in Stage 
'Reducer 2' is a cross product
+POSTHOOK: Lineage: b.key SIMPLE [(src)src.FieldSchema(name:key, type:string, 
comment:default), ]
+POSTHOOK: Lineage: b.value SIMPLE [(src)src.FieldSchema(name:value, 
type:string, comment:default), ]
+Warning: Shuffle Join MERGEJOIN[9][tables = [$hdt$_0, $hdt$_1]] in Stage 
'Reducer 2' is a cross product
 PREHOOK: query: explain select * from A join B
 PREHOOK: type: QUERY
 POSTHOOK: query: explain select * from A join B
@@ -40,6 +44,7 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
         Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 3 (SIMPLE_EDGE)
 #### A masked pattern was here ####
@@ -58,6 +63,7 @@ STAGE PLANS:
                       Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
                       value expressions: _col0 (type: string), _col1 (type: 
string)
             Execution mode: llap
+            LLAP IO: no inputs
         Map 3 
             Map Operator Tree:
                 TableScan
@@ -72,6 +78,7 @@ STAGE PLANS:
                       Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
                       value expressions: _col0 (type: string), _col1 (type: 
string)
             Execution mode: llap
+            LLAP IO: no inputs
         Reducer 2 
             Execution mode: llap
             Reduce Operator Tree:
@@ -82,13 +89,13 @@ STAGE PLANS:
                   0 
                   1 
                 outputColumnNames: _col0, _col1, _col2, _col3
-                Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
+                Statistics: Num rows: 5000 Data size: 110120 Basic stats: 
COMPLETE Column stats: NONE
                 File Output Operator
                   compressed: false
-                  Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
+                  Statistics: Num rows: 5000 Data size: 110120 Basic stats: 
COMPLETE Column stats: NONE
                   table:
-                      input format: org.apache.hadoop.mapred.TextInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                       serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
 
   Stage: Stage-0
@@ -97,7 +104,7 @@ STAGE PLANS:
       Processor Tree:
         ListSink
 
-Warning: Shuffle Join MERGEJOIN[18][tables = [d1, d2, a]] in Stage 'Reducer 3' 
is a cross product
+Warning: Shuffle Join MERGEJOIN[21][tables = [$hdt$_0, $hdt$_1, $hdt$_2]] in 
Stage 'Reducer 3' is a cross product
 PREHOOK: query: explain select * from B d1 join B d2 on d1.key = d2.key join A
 PREHOOK: type: QUERY
 POSTHOOK: query: explain select * from B d1 join B d2 on d1.key = d2.key join A
@@ -109,6 +116,7 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
         Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 4 (SIMPLE_EDGE)
         Reducer 3 <- Map 5 (SIMPLE_EDGE), Reducer 2 (SIMPLE_EDGE)
@@ -121,14 +129,19 @@ STAGE PLANS:
                   Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                    Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                      value expressions: value (type: string)
+                    Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string), value (type: string)
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                        value expressions: _col1 (type: string)
             Execution mode: llap
+            LLAP IO: no inputs
         Map 4 
             Map Operator Tree:
                 TableScan
@@ -136,24 +149,34 @@ STAGE PLANS:
                   Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                    Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                      value expressions: value (type: string)
+                    Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string), value (type: string)
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                        value expressions: _col1 (type: string)
             Execution mode: llap
+            LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
                   alias: a
                   Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                  Reduce Output Operator
-                    sort order: 
+                  Select Operator
+                    expressions: key (type: string), value (type: string)
+                    outputColumnNames: _col0, _col1
                     Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                    value expressions: key (type: string), value (type: string)
+                    Reduce Output Operator
+                      sort order: 
+                      Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                      value expressions: _col0 (type: string), _col1 (type: 
string)
             Execution mode: llap
+            LLAP IO: no inputs
         Reducer 2 
             Execution mode: llap
             Reduce Operator Tree:
@@ -161,14 +184,14 @@ STAGE PLANS:
                 condition map:
                      Inner Join 0 to 1
                 keys:
-                  0 key (type: string)
-                  1 key (type: string)
-                outputColumnNames: _col0, _col1, _col5, _col6
-                Statistics: Num rows: 5 Data size: 57 Basic stats: COMPLETE 
Column stats: NONE
+                  0 _col0 (type: string)
+                  1 _col0 (type: string)
+                outputColumnNames: _col0, _col1, _col2, _col3
+                Statistics: Num rows: 11 Data size: 114 Basic stats: COMPLETE 
Column stats: NONE
                 Reduce Output Operator
                   sort order: 
-                  Statistics: Num rows: 5 Data size: 57 Basic stats: COMPLETE 
Column stats: NONE
-                  value expressions: _col0 (type: string), _col1 (type: 
string), _col5 (type: string), _col6 (type: string)
+                  Statistics: Num rows: 11 Data size: 114 Basic stats: 
COMPLETE Column stats: NONE
+                  value expressions: _col0 (type: string), _col1 (type: 
string), _col2 (type: string), _col3 (type: string)
         Reducer 3 
             Execution mode: llap
             Reduce Operator Tree:
@@ -178,19 +201,15 @@ STAGE PLANS:
                 keys:
                   0 
                   1 
-                outputColumnNames: _col0, _col1, _col5, _col6, _col10, _col11
-                Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: string), _col1 (type: string), 
_col5 (type: string), _col6 (type: string), _col10 (type: string), _col11 
(type: string)
-                  outputColumnNames: _col0, _col1, _col2, _col3, _col4, _col5
-                  Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                    table:
-                        input format: org.apache.hadoop.mapred.TextInputFormat
-                        output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
-                        serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+                outputColumnNames: _col0, _col1, _col2, _col3, _col4, _col5
+                Statistics: Num rows: 5500 Data size: 120932 Basic stats: 
COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 5500 Data size: 120932 Basic stats: 
COMPLETE Column stats: NONE
+                  table:
+                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
 
   Stage: Stage-0
     Fetch Operator
@@ -198,7 +217,7 @@ STAGE PLANS:
       Processor Tree:
         ListSink
 
-Warning: Shuffle Join MERGEJOIN[24][tables = [a, od1]] in Stage 'Reducer 4' is 
a cross product
+Warning: Shuffle Join MERGEJOIN[26][tables = [$hdt$_0, $hdt$_1]] in Stage 
'Reducer 2' is a cross product
 PREHOOK: query: explain select * from A join 
          (select d1.key 
           from B d1 join B d2 on d1.key = d2.key
@@ -216,50 +235,66 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
-        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
-        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
-        Reducer 4 <- Map 6 (SIMPLE_EDGE), Reducer 3 (SIMPLE_EDGE)
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Reducer 5 (SIMPLE_EDGE)
+        Reducer 4 <- Map 3 (SIMPLE_EDGE), Map 6 (SIMPLE_EDGE)
+        Reducer 5 <- Reducer 4 (SIMPLE_EDGE)
 #### A masked pattern was here ####
       Vertices:
         Map 1 
             Map Operator Tree:
                 TableScan
-                  alias: d1
-                  Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: string), value (type: string)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
                     Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
+                      sort order: 
+                      Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                      value expressions: _col0 (type: string), _col1 (type: 
string)
             Execution mode: llap
-        Map 5 
+            LLAP IO: no inputs
+        Map 3 
             Map Operator Tree:
                 TableScan
-                  alias: d2
+                  alias: d1
                   Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                    Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
+                    Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string)
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Map 6 
             Map Operator Tree:
                 TableScan
-                  alias: a
-                  Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                  Reduce Output Operator
-                    sort order: 
-                    Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                    value expressions: key (type: string), value (type: string)
+                  alias: d2
+                  Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string)
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Reducer 2 
             Execution mode: llap
             Reduce Operator Tree:
@@ -267,54 +302,50 @@ STAGE PLANS:
                 condition map:
                      Inner Join 0 to 1
                 keys:
-                  0 key (type: string)
-                  1 key (type: string)
+                  0 
+                  1 
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 2500 Data size: 54560 Basic stats: 
COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 2500 Data size: 54560 Basic stats: 
COMPLETE Column stats: NONE
+                  table:
+                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 _col0 (type: string)
+                  1 _col0 (type: string)
                 outputColumnNames: _col0
-                Statistics: Num rows: 5 Data size: 57 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 11 Data size: 114 Basic stats: COMPLETE 
Column stats: NONE
                 Group By Operator
                   keys: _col0 (type: string)
                   mode: hash
                   outputColumnNames: _col0
-                  Statistics: Num rows: 5 Data size: 57 Basic stats: COMPLETE 
Column stats: NONE
+                  Statistics: Num rows: 11 Data size: 114 Basic stats: 
COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: string)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: string)
-                    Statistics: Num rows: 5 Data size: 57 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 3 
+                    Statistics: Num rows: 11 Data size: 114 Basic stats: 
COMPLETE Column stats: NONE
+        Reducer 5 
             Execution mode: llap
             Reduce Operator Tree:
               Group By Operator
                 keys: KEY._col0 (type: string)
                 mode: mergepartial
                 outputColumnNames: _col0
-                Statistics: Num rows: 2 Data size: 22 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 5 Data size: 51 Basic stats: COMPLETE 
Column stats: NONE
                 Reduce Output Operator
                   sort order: 
-                  Statistics: Num rows: 2 Data size: 22 Basic stats: COMPLETE 
Column stats: NONE
+                  Statistics: Num rows: 5 Data size: 51 Basic stats: COMPLETE 
Column stats: NONE
                   value expressions: _col0 (type: string)
-        Reducer 4 
-            Execution mode: llap
-            Reduce Operator Tree:
-              Merge Join Operator
-                condition map:
-                     Inner Join 0 to 1
-                keys:
-                  0 
-                  1 
-                outputColumnNames: _col0, _col1, _col5
-                Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: string), _col1 (type: string), 
_col5 (type: string)
-                  outputColumnNames: _col0, _col1, _col2
-                  Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                    table:
-                        input format: org.apache.hadoop.mapred.TextInputFormat
-                        output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
-                        serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
 
   Stage: Stage-0
     Fetch Operator
@@ -322,8 +353,8 @@ STAGE PLANS:
       Processor Tree:
         ListSink
 
-Warning: Shuffle Join MERGEJOIN[17][tables = [d1, d2]] in Stage 'Reducer 2' is 
a cross product
-Warning: Shuffle Join MERGEJOIN[18][tables = [a, od1]] in Stage 'Reducer 4' is 
a cross product
+Warning: Shuffle Join MERGEJOIN[19][tables = [$hdt$_1, $hdt$_2]] in Stage 
'Reducer 4' is a cross product
+Warning: Shuffle Join MERGEJOIN[20][tables = [$hdt$_0, $hdt$_1]] in Stage 
'Reducer 2' is a cross product
 PREHOOK: query: explain select * from A join (select d1.key from B d1 join B 
d2 where 1 = 1  group by d1.key) od1
 PREHOOK: type: QUERY
 POSTHOOK: query: explain select * from A join (select d1.key from B d1 join B 
d2 where 1 = 1  group by d1.key) od1
@@ -335,41 +366,55 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
-        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
-        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
-        Reducer 4 <- Map 6 (SIMPLE_EDGE), Reducer 3 (SIMPLE_EDGE)
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Reducer 5 (SIMPLE_EDGE)
+        Reducer 4 <- Map 3 (SIMPLE_EDGE), Map 6 (SIMPLE_EDGE)
+        Reducer 5 <- Reducer 4 (SIMPLE_EDGE)
 #### A masked pattern was here ####
       Vertices:
         Map 1 
             Map Operator Tree:
                 TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: string), value (type: string)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      sort order: 
+                      Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                      value expressions: _col0 (type: string), _col1 (type: 
string)
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 3 
+            Map Operator Tree:
+                TableScan
                   alias: d1
                   Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
-                  Reduce Output Operator
-                    sort order: 
+                  Select Operator
+                    expressions: key (type: string)
+                    outputColumnNames: _col0
                     Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
-                    value expressions: key (type: string)
+                    Reduce Output Operator
+                      sort order: 
+                      Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                      value expressions: _col0 (type: string)
             Execution mode: llap
-        Map 5 
+            LLAP IO: no inputs
+        Map 6 
             Map Operator Tree:
                 TableScan
                   alias: d2
                   Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: COMPLETE
-                  Reduce Output Operator
-                    sort order: 
-                    Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: COMPLETE
-            Execution mode: llap
-        Map 6 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                  Reduce Output Operator
-                    sort order: 
-                    Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                    value expressions: key (type: string), value (type: string)
+                  Select Operator
+                    Statistics: Num rows: 10 Data size: 40 Basic stats: 
COMPLETE Column stats: COMPLETE
+                    Reduce Output Operator
+                      sort order: 
+                      Statistics: Num rows: 10 Data size: 40 Basic stats: 
COMPLETE Column stats: COMPLETE
             Execution mode: llap
+            LLAP IO: no inputs
         Reducer 2 
             Execution mode: llap
             Reduce Operator Tree:
@@ -379,52 +424,48 @@ STAGE PLANS:
                 keys:
                   0 
                   1 
+                outputColumnNames: _col0, _col1, _col2
+                Statistics: Num rows: 25000 Data size: 675600 Basic stats: 
COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 25000 Data size: 675600 Basic stats: 
COMPLETE Column stats: NONE
+                  table:
+                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                      serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+        Reducer 4 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 
+                  1 
                 outputColumnNames: _col0
-                Statistics: Num rows: 11 Data size: 114 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 100 Data size: 1540 Basic stats: 
COMPLETE Column stats: NONE
                 Group By Operator
                   keys: _col0 (type: string)
                   mode: hash
                   outputColumnNames: _col0
-                  Statistics: Num rows: 11 Data size: 114 Basic stats: 
COMPLETE Column stats: NONE
+                  Statistics: Num rows: 100 Data size: 1540 Basic stats: 
COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: string)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: string)
-                    Statistics: Num rows: 11 Data size: 114 Basic stats: 
COMPLETE Column stats: NONE
-        Reducer 3 
+                    Statistics: Num rows: 100 Data size: 1540 Basic stats: 
COMPLETE Column stats: NONE
+        Reducer 5 
             Execution mode: llap
             Reduce Operator Tree:
               Group By Operator
                 keys: KEY._col0 (type: string)
                 mode: mergepartial
                 outputColumnNames: _col0
-                Statistics: Num rows: 5 Data size: 51 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 50 Data size: 770 Basic stats: COMPLETE 
Column stats: NONE
                 Reduce Output Operator
                   sort order: 
-                  Statistics: Num rows: 5 Data size: 51 Basic stats: COMPLETE 
Column stats: NONE
+                  Statistics: Num rows: 50 Data size: 770 Basic stats: 
COMPLETE Column stats: NONE
                   value expressions: _col0 (type: string)
-        Reducer 4 
-            Execution mode: llap
-            Reduce Operator Tree:
-              Merge Join Operator
-                condition map:
-                     Inner Join 0 to 1
-                keys:
-                  0 
-                  1 
-                outputColumnNames: _col0, _col1, _col5
-                Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: string), _col1 (type: string), 
_col5 (type: string)
-                  outputColumnNames: _col0, _col1, _col2
-                  Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                    table:
-                        input format: org.apache.hadoop.mapred.TextInputFormat
-                        output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
-                        serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
 
   Stage: Stage-0
     Fetch Operator
@@ -432,7 +473,7 @@ STAGE PLANS:
       Processor Tree:
         ListSink
 
-Warning: Shuffle Join MERGEJOIN[29][tables = [ss, od1]] in Stage 'Reducer 3' 
is a cross product
+Warning: Shuffle Join MERGEJOIN[30][tables = [$hdt$_0, $hdt$_1]] in Stage 
'Reducer 3' is a cross product
 PREHOOK: query: explain select * from 
 (select A.key from A  group by key) ss join
 (select d1.key from B d1 join B d2 on d1.key = d2.key where 1 = 1 group by 
d1.key) od1
@@ -448,6 +489,7 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
         Reducer 2 <- Map 1 (SIMPLE_EDGE)
         Reducer 3 <- Reducer 2 (SIMPLE_EDGE), Reducer 6 (SIMPLE_EDGE)
@@ -475,6 +517,7 @@ STAGE PLANS:
                         Map-reduce partition columns: _col0 (type: string)
                         Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Map 4 
             Map Operator Tree:
                 TableScan
@@ -482,13 +525,18 @@ STAGE PLANS:
                   Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                    Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
+                    Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string)
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Map 7 
             Map Operator Tree:
                 TableScan
@@ -496,13 +544,18 @@ STAGE PLANS:
                   Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                    Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
+                    Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string)
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 104 Basic stats: 
COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Reducer 2 
             Execution mode: llap
             Reduce Operator Tree:
@@ -525,13 +578,13 @@ STAGE PLANS:
                   0 
                   1 
                 outputColumnNames: _col0, _col1
-                Statistics: Num rows: 275 Data size: 2921 Basic stats: 
COMPLETE Column stats: NONE
+                Statistics: Num rows: 1250 Data size: 27280 Basic stats: 
COMPLETE Column stats: NONE
                 File Output Operator
                   compressed: false
-                  Statistics: Num rows: 275 Data size: 2921 Basic stats: 
COMPLETE Column stats: NONE
+                  Statistics: Num rows: 1250 Data size: 27280 Basic stats: 
COMPLETE Column stats: NONE
                   table:
-                      input format: org.apache.hadoop.mapred.TextInputFormat
-                      output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                      input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                      output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                       serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
         Reducer 5 
             Execution mode: llap
@@ -540,20 +593,20 @@ STAGE PLANS:
                 condition map:
                      Inner Join 0 to 1
                 keys:
-                  0 key (type: string)
-                  1 key (type: string)
+                  0 _col0 (type: string)
+                  1 _col0 (type: string)
                 outputColumnNames: _col0
-                Statistics: Num rows: 5 Data size: 57 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 11 Data size: 114 Basic stats: COMPLETE 
Column stats: NONE
                 Group By Operator
                   keys: _col0 (type: string)
                   mode: hash
                   outputColumnNames: _col0
-                  Statistics: Num rows: 5 Data size: 57 Basic stats: COMPLETE 
Column stats: NONE
+                  Statistics: Num rows: 11 Data size: 114 Basic stats: 
COMPLETE Column stats: NONE
                   Reduce Output Operator
                     key expressions: _col0 (type: string)
                     sort order: +
                     Map-reduce partition columns: _col0 (type: string)
-                    Statistics: Num rows: 5 Data size: 57 Basic stats: 
COMPLETE Column stats: NONE
+                    Statistics: Num rows: 11 Data size: 114 Basic stats: 
COMPLETE Column stats: NONE
         Reducer 6 
             Execution mode: llap
             Reduce Operator Tree:
@@ -561,10 +614,10 @@ STAGE PLANS:
                 keys: KEY._col0 (type: string)
                 mode: mergepartial
                 outputColumnNames: _col0
-                Statistics: Num rows: 2 Data size: 22 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 5 Data size: 51 Basic stats: COMPLETE 
Column stats: NONE
                 Reduce Output Operator
                   sort order: 
-                  Statistics: Num rows: 2 Data size: 22 Basic stats: COMPLETE 
Column stats: NONE
+                  Statistics: Num rows: 5 Data size: 51 Basic stats: COMPLETE 
Column stats: NONE
                   value expressions: _col0 (type: string)
 
   Stage: Stage-0

http://git-wip-us.apache.org/repos/asf/hive/blob/5f01dc42/ql/src/test/results/clientpositive/llap/cross_product_check_2.q.out
----------------------------------------------------------------------
diff --git 
a/ql/src/test/results/clientpositive/llap/cross_product_check_2.q.out 
b/ql/src/test/results/clientpositive/llap/cross_product_check_2.q.out
index c2a6b94..3b14b84 100644
--- a/ql/src/test/results/clientpositive/llap/cross_product_check_2.q.out
+++ b/ql/src/test/results/clientpositive/llap/cross_product_check_2.q.out
@@ -14,6 +14,8 @@ POSTHOOK: type: CREATETABLE_AS_SELECT
 POSTHOOK: Input: default@src
 POSTHOOK: Output: database:default
 POSTHOOK: Output: default@A
+POSTHOOK: Lineage: a.key SIMPLE [(src)src.FieldSchema(name:key, type:string, 
comment:default), ]
+POSTHOOK: Lineage: a.value SIMPLE [(src)src.FieldSchema(name:value, 
type:string, comment:default), ]
 PREHOOK: query: create table B as
 select * from src order by key
 limit 10
@@ -28,7 +30,9 @@ POSTHOOK: type: CREATETABLE_AS_SELECT
 POSTHOOK: Input: default@src
 POSTHOOK: Output: database:default
 POSTHOOK: Output: default@B
-Warning: Map Join MAPJOIN[11][bigTable=?] in task 'Map 1' is a cross product
+POSTHOOK: Lineage: b.key SIMPLE [(src)src.FieldSchema(name:key, type:string, 
comment:default), ]
+POSTHOOK: Lineage: b.value SIMPLE [(src)src.FieldSchema(name:value, 
type:string, comment:default), ]
+Warning: Map Join MAPJOIN[9][bigTable=?] in task 'Map 1' is a cross product
 PREHOOK: query: explain select * from A join B
 PREHOOK: type: QUERY
 POSTHOOK: query: explain select * from A join B
@@ -40,6 +44,7 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
         Map 1 <- Map 2 (BROADCAST_EDGE)
 #### A masked pattern was here ####
@@ -62,16 +67,16 @@ STAGE PLANS:
                       outputColumnNames: _col0, _col1, _col2, _col3
                       input vertices:
                         1 Map 2
-                      Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                      HybridGraceHashJoin: true
+                      Statistics: Num rows: 5000 Data size: 106120 Basic 
stats: COMPLETE Column stats: NONE
                       File Output Operator
                         compressed: false
-                        Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
+                        Statistics: Num rows: 5000 Data size: 106120 Basic 
stats: COMPLETE Column stats: NONE
                         table:
-                            input format: 
org.apache.hadoop.mapred.TextInputFormat
-                            output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                            input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                            output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                             serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
             Execution mode: llap
+            LLAP IO: no inputs
         Map 2 
             Map Operator Tree:
                 TableScan
@@ -86,6 +91,7 @@ STAGE PLANS:
                       Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
                       value expressions: _col0 (type: string), _col1 (type: 
string)
             Execution mode: llap
+            LLAP IO: no inputs
 
   Stage: Stage-0
     Fetch Operator
@@ -93,7 +99,7 @@ STAGE PLANS:
       Processor Tree:
         ListSink
 
-Warning: Map Join MAPJOIN[18][bigTable=a] in task 'Map 3' is a cross product
+Warning: Map Join MAPJOIN[21][bigTable=?] in task 'Map 3' is a cross product
 PREHOOK: query: explain select * from B d1 join B d2 on d1.key = d2.key join A
 PREHOOK: type: QUERY
 POSTHOOK: query: explain select * from B d1 join B d2 on d1.key = d2.key join A
@@ -105,6 +111,7 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
         Map 1 <- Map 2 (BROADCAST_EDGE)
         Map 3 <- Map 1 (BROADCAST_EDGE)
@@ -117,23 +124,27 @@ STAGE PLANS:
                   Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
-                    Map Join Operator
-                      condition map:
-                           Inner Join 0 to 1
-                      keys:
-                        0 key (type: string)
-                        1 key (type: string)
-                      outputColumnNames: _col0, _col1, _col5, _col6
-                      input vertices:
-                        1 Map 2
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                      HybridGraceHashJoin: true
-                      Reduce Output Operator
-                        sort order: 
-                        Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                        value expressions: _col0 (type: string), _col1 (type: 
string), _col5 (type: string), _col6 (type: string)
+                    Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string), value (type: string)
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                      Map Join Operator
+                        condition map:
+                             Inner Join 0 to 1
+                        keys:
+                          0 _col0 (type: string)
+                          1 _col0 (type: string)
+                        outputColumnNames: _col0, _col1, _col2, _col3
+                        input vertices:
+                          1 Map 2
+                        Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
+                        Reduce Output Operator
+                          sort order: 
+                          Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
+                          value expressions: _col0 (type: string), _col1 
(type: string), _col2 (type: string), _col3 (type: string)
             Execution mode: llap
+            LLAP IO: no inputs
         Map 2 
             Map Operator Tree:
                 TableScan
@@ -141,42 +152,47 @@ STAGE PLANS:
                   Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
-                    Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
-                      value expressions: value (type: string)
+                    Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string), value (type: string)
+                      outputColumnNames: _col0, _col1
+                      Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                        value expressions: _col1 (type: string)
             Execution mode: llap
+            LLAP IO: no inputs
         Map 3 
             Map Operator Tree:
                 TableScan
                   alias: a
                   Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                  Map Join Operator
-                    condition map:
-                         Inner Join 0 to 1
-                    keys:
-                      0 
-                      1 
-                    outputColumnNames: _col0, _col1, _col5, _col6, _col10, 
_col11
-                    input vertices:
-                      0 Map 1
-                    Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                    HybridGraceHashJoin: true
-                    Select Operator
-                      expressions: _col0 (type: string), _col1 (type: string), 
_col5 (type: string), _col6 (type: string), _col10 (type: string), _col11 
(type: string)
+                  Select Operator
+                    expressions: key (type: string), value (type: string)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                    Map Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 
+                        1 
                       outputColumnNames: _col0, _col1, _col2, _col3, _col4, 
_col5
-                      Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
+                      input vertices:
+                        0 Map 1
+                      Statistics: Num rows: 5500 Data size: 116432 Basic 
stats: COMPLETE Column stats: NONE
                       File Output Operator
                         compressed: false
-                        Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
+                        Statistics: Num rows: 5500 Data size: 116432 Basic 
stats: COMPLETE Column stats: NONE
                         table:
-                            input format: 
org.apache.hadoop.mapred.TextInputFormat
-                            output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                            input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                            output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                             serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
             Execution mode: llap
+            LLAP IO: no inputs
 
   Stage: Stage-0
     Fetch Operator
@@ -184,7 +200,7 @@ STAGE PLANS:
       Processor Tree:
         ListSink
 
-Warning: Map Join MAPJOIN[24][bigTable=a] in task 'Map 4' is a cross product
+Warning: Map Join MAPJOIN[26][bigTable=?] in task 'Map 1' is a cross product
 PREHOOK: query: explain select * from A join 
          (select d1.key 
           from B d1 join B d2 on d1.key = d2.key 
@@ -202,95 +218,105 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Map 4 <- Reducer 2 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
+        Map 1 <- Reducer 3 (BROADCAST_EDGE)
+        Map 2 <- Map 4 (BROADCAST_EDGE)
+        Reducer 3 <- Map 2 (SIMPLE_EDGE)
 #### A masked pattern was here ####
       Vertices:
         Map 1 
             Map Operator Tree:
                 TableScan
-                  alias: d1
-                  Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: NONE
-                  Filter Operator
-                    predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: string), value (type: string)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
                     Map Join Operator
                       condition map:
                            Inner Join 0 to 1
                       keys:
-                        0 key (type: string)
-                        1 key (type: string)
-                      outputColumnNames: _col0
+                        0 
+                        1 
+                      outputColumnNames: _col0, _col1, _col2
                       input vertices:
-                        1 Map 3
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                      HybridGraceHashJoin: true
-                      Group By Operator
-                        keys: _col0 (type: string)
-                        mode: hash
-                        outputColumnNames: _col0
-                        Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                        Reduce Output Operator
-                          key expressions: _col0 (type: string)
-                          sort order: +
-                          Map-reduce partition columns: _col0 (type: string)
-                          Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
+                        1 Reducer 3
+                      Statistics: Num rows: 2500 Data size: 52560 Basic stats: 
COMPLETE Column stats: NONE
+                      File Output Operator
+                        compressed: false
+                        Statistics: Num rows: 2500 Data size: 52560 Basic 
stats: COMPLETE Column stats: NONE
+                        table:
+                            input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                            output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                            serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
             Execution mode: llap
-        Map 3 
+            LLAP IO: no inputs
+        Map 2 
             Map Operator Tree:
                 TableScan
-                  alias: d2
+                  alias: d1
                   Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
-                    Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
+                    Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string)
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                      Map Join Operator
+                        condition map:
+                             Inner Join 0 to 1
+                        keys:
+                          0 _col0 (type: string)
+                          1 _col0 (type: string)
+                        outputColumnNames: _col0
+                        input vertices:
+                          1 Map 4
+                        Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
+                        Group By Operator
+                          keys: _col0 (type: string)
+                          mode: hash
+                          outputColumnNames: _col0
+                          Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
+                          Reduce Output Operator
+                            key expressions: _col0 (type: string)
+                            sort order: +
+                            Map-reduce partition columns: _col0 (type: string)
+                            Statistics: Num rows: 11 Data size: 105 Basic 
stats: COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Map 4 
             Map Operator Tree:
                 TableScan
-                  alias: a
-                  Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                  Map Join Operator
-                    condition map:
-                         Inner Join 0 to 1
-                    keys:
-                      0 
-                      1 
-                    outputColumnNames: _col0, _col1, _col5
-                    input vertices:
-                      1 Reducer 2
-                    Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                    HybridGraceHashJoin: true
+                  alias: d2
+                  Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
                     Select Operator
-                      expressions: _col0 (type: string), _col1 (type: string), 
_col5 (type: string)
-                      outputColumnNames: _col0, _col1, _col2
-                      Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                      File Output Operator
-                        compressed: false
-                        Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                        table:
-                            input format: 
org.apache.hadoop.mapred.TextInputFormat
-                            output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
-                            serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+                      expressions: key (type: string)
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
             Execution mode: llap
-        Reducer 2 
+            LLAP IO: no inputs
+        Reducer 3 
             Execution mode: llap
             Reduce Operator Tree:
               Group By Operator
                 keys: KEY._col0 (type: string)
                 mode: mergepartial
                 outputColumnNames: _col0
-                Statistics: Num rows: 2 Data size: 20 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 5 Data size: 47 Basic stats: COMPLETE 
Column stats: NONE
                 Reduce Output Operator
                   sort order: 
-                  Statistics: Num rows: 2 Data size: 20 Basic stats: COMPLETE 
Column stats: NONE
+                  Statistics: Num rows: 5 Data size: 47 Basic stats: COMPLETE 
Column stats: NONE
                   value expressions: _col0 (type: string)
 
   Stage: Stage-0
@@ -299,8 +325,8 @@ STAGE PLANS:
       Processor Tree:
         ListSink
 
-Warning: Map Join MAPJOIN[17][bigTable=d1] in task 'Map 1' is a cross product
-Warning: Map Join MAPJOIN[18][bigTable=a] in task 'Map 4' is a cross product
+Warning: Map Join MAPJOIN[19][bigTable=?] in task 'Map 2' is a cross product
+Warning: Map Join MAPJOIN[20][bigTable=?] in task 'Map 1' is a cross product
 PREHOOK: query: explain select * from A join (select d1.key from B d1 join B 
d2 where 1 = 1 group by d1.key) od1
 PREHOOK: type: QUERY
 POSTHOOK: query: explain select * from A join (select d1.key from B d1 join B 
d2 where 1 = 1 group by d1.key) od1
@@ -312,87 +338,95 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
-        Map 1 <- Map 3 (BROADCAST_EDGE)
-        Map 4 <- Reducer 2 (BROADCAST_EDGE)
-        Reducer 2 <- Map 1 (SIMPLE_EDGE)
+        Map 1 <- Reducer 3 (BROADCAST_EDGE)
+        Map 2 <- Map 4 (BROADCAST_EDGE)
+        Reducer 3 <- Map 2 (SIMPLE_EDGE)
 #### A masked pattern was here ####
       Vertices:
         Map 1 
             Map Operator Tree:
                 TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                  Select Operator
+                    expressions: key (type: string), value (type: string)
+                    outputColumnNames: _col0, _col1
+                    Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
+                    Map Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 
+                        1 
+                      outputColumnNames: _col0, _col1, _col2
+                      input vertices:
+                        1 Reducer 3
+                      Statistics: Num rows: 25000 Data size: 655600 Basic 
stats: COMPLETE Column stats: NONE
+                      File Output Operator
+                        compressed: false
+                        Statistics: Num rows: 25000 Data size: 655600 Basic 
stats: COMPLETE Column stats: NONE
+                        table:
+                            input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                            output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
+                            serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+            Execution mode: llap
+            LLAP IO: no inputs
+        Map 2 
+            Map Operator Tree:
+                TableScan
                   alias: d1
                   Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: NONE
-                  Map Join Operator
-                    condition map:
-                         Inner Join 0 to 1
-                    keys:
-                      0 
-                      1 
+                  Select Operator
+                    expressions: key (type: string)
                     outputColumnNames: _col0
-                    input vertices:
-                      1 Map 3
-                    Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
-                    HybridGraceHashJoin: true
-                    Group By Operator
-                      keys: _col0 (type: string)
-                      mode: hash
+                    Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                    Map Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 
+                        1 
                       outputColumnNames: _col0
-                      Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
-                      Reduce Output Operator
-                        key expressions: _col0 (type: string)
-                        sort order: +
-                        Map-reduce partition columns: _col0 (type: string)
-                        Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
+                      input vertices:
+                        1 Map 4
+                      Statistics: Num rows: 100 Data size: 1460 Basic stats: 
COMPLETE Column stats: NONE
+                      Group By Operator
+                        keys: _col0 (type: string)
+                        mode: hash
+                        outputColumnNames: _col0
+                        Statistics: Num rows: 100 Data size: 1460 Basic stats: 
COMPLETE Column stats: NONE
+                        Reduce Output Operator
+                          key expressions: _col0 (type: string)
+                          sort order: +
+                          Map-reduce partition columns: _col0 (type: string)
+                          Statistics: Num rows: 100 Data size: 1460 Basic 
stats: COMPLETE Column stats: NONE
             Execution mode: llap
-        Map 3 
+            LLAP IO: no inputs
+        Map 4 
             Map Operator Tree:
                 TableScan
                   alias: d2
                   Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: COMPLETE
-                  Reduce Output Operator
-                    sort order: 
-                    Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: COMPLETE
-            Execution mode: llap
-        Map 4 
-            Map Operator Tree:
-                TableScan
-                  alias: a
-                  Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
-                  Map Join Operator
-                    condition map:
-                         Inner Join 0 to 1
-                    keys:
-                      0 
-                      1 
-                    outputColumnNames: _col0, _col1, _col5
-                    input vertices:
-                      1 Reducer 2
-                    Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                    HybridGraceHashJoin: true
-                    Select Operator
-                      expressions: _col0 (type: string), _col1 (type: string), 
_col5 (type: string)
-                      outputColumnNames: _col0, _col1, _col2
-                      Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                      File Output Operator
-                        compressed: false
-                        Statistics: Num rows: 550 Data size: 5843 Basic stats: 
COMPLETE Column stats: NONE
-                        table:
-                            input format: 
org.apache.hadoop.mapred.TextInputFormat
-                            output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
-                            serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
+                  Select Operator
+                    Statistics: Num rows: 10 Data size: 40 Basic stats: 
COMPLETE Column stats: COMPLETE
+                    Reduce Output Operator
+                      sort order: 
+                      Statistics: Num rows: 10 Data size: 40 Basic stats: 
COMPLETE Column stats: COMPLETE
             Execution mode: llap
-        Reducer 2 
+            LLAP IO: no inputs
+        Reducer 3 
             Execution mode: llap
             Reduce Operator Tree:
               Group By Operator
                 keys: KEY._col0 (type: string)
                 mode: mergepartial
                 outputColumnNames: _col0
-                Statistics: Num rows: 5 Data size: 47 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 50 Data size: 730 Basic stats: COMPLETE 
Column stats: NONE
                 Reduce Output Operator
                   sort order: 
-                  Statistics: Num rows: 5 Data size: 47 Basic stats: COMPLETE 
Column stats: NONE
+                  Statistics: Num rows: 50 Data size: 730 Basic stats: 
COMPLETE Column stats: NONE
                   value expressions: _col0 (type: string)
 
   Stage: Stage-0
@@ -401,7 +435,7 @@ STAGE PLANS:
       Processor Tree:
         ListSink
 
-Warning: Map Join MAPJOIN[29][bigTable=?] in task 'Reducer 2' is a cross 
product
+Warning: Map Join MAPJOIN[30][bigTable=?] in task 'Reducer 2' is a cross 
product
 PREHOOK: query: explain select * from 
 (select A.key from A group by key) ss join 
 (select d1.key from B d1 join B d2 on d1.key = d2.key where 1 = 1 group by 
d1.key) od1
@@ -417,6 +451,7 @@ STAGE DEPENDENCIES:
 STAGE PLANS:
   Stage: Stage-1
     Tez
+#### A masked pattern was here ####
       Edges:
         Map 3 <- Map 5 (BROADCAST_EDGE)
         Reducer 2 <- Map 1 (SIMPLE_EDGE), Reducer 4 (BROADCAST_EDGE)
@@ -443,6 +478,7 @@ STAGE PLANS:
                         Map-reduce partition columns: _col0 (type: string)
                         Statistics: Num rows: 500 Data size: 5312 Basic stats: 
COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Map 3 
             Map Operator Tree:
                 TableScan
@@ -450,29 +486,33 @@ STAGE PLANS:
                   Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
-                    Map Join Operator
-                      condition map:
-                           Inner Join 0 to 1
-                      keys:
-                        0 key (type: string)
-                        1 key (type: string)
+                    Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string)
                       outputColumnNames: _col0
-                      input vertices:
-                        1 Map 5
-                      Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                      HybridGraceHashJoin: true
-                      Group By Operator
-                        keys: _col0 (type: string)
-                        mode: hash
+                      Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                      Map Join Operator
+                        condition map:
+                             Inner Join 0 to 1
+                        keys:
+                          0 _col0 (type: string)
+                          1 _col0 (type: string)
                         outputColumnNames: _col0
-                        Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
-                        Reduce Output Operator
-                          key expressions: _col0 (type: string)
-                          sort order: +
-                          Map-reduce partition columns: _col0 (type: string)
-                          Statistics: Num rows: 5 Data size: 52 Basic stats: 
COMPLETE Column stats: NONE
+                        input vertices:
+                          1 Map 5
+                        Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
+                        Group By Operator
+                          keys: _col0 (type: string)
+                          mode: hash
+                          outputColumnNames: _col0
+                          Statistics: Num rows: 11 Data size: 105 Basic stats: 
COMPLETE Column stats: NONE
+                          Reduce Output Operator
+                            key expressions: _col0 (type: string)
+                            sort order: +
+                            Map-reduce partition columns: _col0 (type: string)
+                            Statistics: Num rows: 11 Data size: 105 Basic 
stats: COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Map 5 
             Map Operator Tree:
                 TableScan
@@ -480,15 +520,20 @@ STAGE PLANS:
                   Statistics: Num rows: 10 Data size: 96 Basic stats: COMPLETE 
Column stats: NONE
                   Filter Operator
                     predicate: key is not null (type: boolean)
-                    Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
-                    Reduce Output Operator
-                      key expressions: key (type: string)
-                      sort order: +
-                      Map-reduce partition columns: key (type: string)
-                      Statistics: Num rows: 5 Data size: 48 Basic stats: 
COMPLETE Column stats: NONE
+                    Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                    Select Operator
+                      expressions: key (type: string)
+                      outputColumnNames: _col0
+                      Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col0 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col0 (type: string)
+                        Statistics: Num rows: 10 Data size: 96 Basic stats: 
COMPLETE Column stats: NONE
             Execution mode: llap
+            LLAP IO: no inputs
         Reducer 2 
-            Execution mode: uber
+            Execution mode: llap
             Reduce Operator Tree:
               Group By Operator
                 keys: KEY._col0 (type: string)
@@ -504,14 +549,13 @@ STAGE PLANS:
                   outputColumnNames: _col0, _col1
                   input vertices:
                     1 Reducer 4
-                  Statistics: Num rows: 275 Data size: 2921 Basic stats: 
COMPLETE Column stats: NONE
-                  HybridGraceHashJoin: true
+                  Statistics: Num rows: 1250 Data size: 26280 Basic stats: 
COMPLETE Column stats: NONE
                   File Output Operator
                     compressed: false
-                    Statistics: Num rows: 275 Data size: 2921 Basic stats: 
COMPLETE Column stats: NONE
+                    Statistics: Num rows: 1250 Data size: 26280 Basic stats: 
COMPLETE Column stats: NONE
                     table:
-                        input format: org.apache.hadoop.mapred.TextInputFormat
-                        output format: 
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
+                        input format: 
org.apache.hadoop.mapred.SequenceFileInputFormat
+                        output format: 
org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
                         serde: 
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
         Reducer 4 
             Execution mode: llap
@@ -520,10 +564,10 @@ STAGE PLANS:
                 keys: KEY._col0 (type: string)
                 mode: mergepartial
                 outputColumnNames: _col0
-                Statistics: Num rows: 2 Data size: 20 Basic stats: COMPLETE 
Column stats: NONE
+                Statistics: Num rows: 5 Data size: 47 Basic stats: COMPLETE 
Column stats: NONE
                 Reduce Output Operator
                   sort order: 
-                  Statistics: Num rows: 2 Data size: 20 Basic stats: COMPLETE 
Column stats: NONE
+                  Statistics: Num rows: 5 Data size: 47 Basic stats: COMPLETE 
Column stats: NONE
                   value expressions: _col0 (type: string)
 
   Stage: Stage-0

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