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Posted to commits@hive.apache.org by pr...@apache.org on 2015/09/18 09:33:37 UTC

hive git commit: HIVE-11874: LLAP: Fix auto_join_nulls.q, auto_sortmerge_join_6.q test diffs (Prasanth Jayachandran)

Repository: hive
Updated Branches:
  refs/heads/llap 754c27900 -> ae1c7153b


HIVE-11874: LLAP: Fix auto_join_nulls.q,auto_sortmerge_join_6.q test diffs (Prasanth Jayachandran)


Project: http://git-wip-us.apache.org/repos/asf/hive/repo
Commit: http://git-wip-us.apache.org/repos/asf/hive/commit/ae1c7153
Tree: http://git-wip-us.apache.org/repos/asf/hive/tree/ae1c7153
Diff: http://git-wip-us.apache.org/repos/asf/hive/diff/ae1c7153

Branch: refs/heads/llap
Commit: ae1c7153bbd9ad0540aed0c7e08412c22e5661d3
Parents: 754c279
Author: Prasanth Jayachandran <j....@gmail.com>
Authored: Fri Sep 18 02:33:20 2015 -0500
Committer: Prasanth Jayachandran <j....@gmail.com>
Committed: Fri Sep 18 02:33:20 2015 -0500

----------------------------------------------------------------------
 .../test/resources/testconfiguration.properties |    4 +-
 .../clientpositive/auto_sortmerge_join_6.q      |    1 +
 .../clientpositive/llap/auto_join_nulls.q.out   |  217 ++++
 .../llap/auto_sortmerge_join_6.q.out            | 1200 ++++++++++++++++++
 .../clientpositive/tez/auto_join_nulls.q.out    |    2 +-
 .../tez/auto_sortmerge_join_6.q.out             |  160 +--
 6 files changed, 1482 insertions(+), 102 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hive/blob/ae1c7153/itests/src/test/resources/testconfiguration.properties
----------------------------------------------------------------------
diff --git a/itests/src/test/resources/testconfiguration.properties b/itests/src/test/resources/testconfiguration.properties
index 96d3029..598d682 100644
--- a/itests/src/test/resources/testconfiguration.properties
+++ b/itests/src/test/resources/testconfiguration.properties
@@ -309,13 +309,15 @@ minitez.query.files.shared=alter_merge_2_orc.q,\
   auto_sortmerge_join_3.q,\
   auto_sortmerge_join_4.q,\
   auto_sortmerge_join_5.q,\
+  auto_sortmerge_join_6.q,\
   auto_sortmerge_join_7.q,\
   auto_sortmerge_join_8.q,\
   auto_sortmerge_join_9.q,\
   auto_join30.q,\
   auto_join21.q,\
   auto_join29.q,\
-  auto_join_filters.q
+  auto_join_filters.q,\
+  auto_join_nulls.q
 
 
 minitez.query.files=bucket_map_join_tez1.q,\

http://git-wip-us.apache.org/repos/asf/hive/blob/ae1c7153/ql/src/test/queries/clientpositive/auto_sortmerge_join_6.q
----------------------------------------------------------------------
diff --git a/ql/src/test/queries/clientpositive/auto_sortmerge_join_6.q b/ql/src/test/queries/clientpositive/auto_sortmerge_join_6.q
index 309987b..0ddf378 100644
--- a/ql/src/test/queries/clientpositive/auto_sortmerge_join_6.q
+++ b/ql/src/test/queries/clientpositive/auto_sortmerge_join_6.q
@@ -1,6 +1,7 @@
 set hive.enforce.bucketing = true;
 set hive.enforce.sorting = true;
 set hive.exec.reducers.max = 1;
+set hive.explain.user=false;
 
 CREATE TABLE tbl1(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS;
 CREATE TABLE tbl2(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS;

http://git-wip-us.apache.org/repos/asf/hive/blob/ae1c7153/ql/src/test/results/clientpositive/llap/auto_join_nulls.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/auto_join_nulls.q.out b/ql/src/test/results/clientpositive/llap/auto_join_nulls.q.out
new file mode 100644
index 0000000..b9a759f
--- /dev/null
+++ b/ql/src/test/results/clientpositive/llap/auto_join_nulls.q.out
@@ -0,0 +1,217 @@
+PREHOOK: query: CREATE TABLE myinput1(key int, value int)
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@myinput1
+POSTHOOK: query: CREATE TABLE myinput1(key int, value int)
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@myinput1
+PREHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/in1.txt' INTO TABLE myinput1
+PREHOOK: type: LOAD
+#### A masked pattern was here ####
+PREHOOK: Output: default@myinput1
+POSTHOOK: query: LOAD DATA LOCAL INPATH '../../data/files/in1.txt' INTO TABLE myinput1
+POSTHOOK: type: LOAD
+#### A masked pattern was here ####
+POSTHOOK: Output: default@myinput1
+Warning: Map Join MAPJOIN[16][bigTable=?] in task 'Map 1' is a cross product
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+13630578
+Warning: Map Join MAPJOIN[15][bigTable=?] in task 'Map 1' is a cross product
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+13630578
+Warning: Map Join MAPJOIN[15][bigTable=?] in task 'Map 1' is a cross product
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+13630578
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b ON a.key = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b ON a.key = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3078400
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b ON a.key = b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b ON a.key = b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4509856
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b ON a.value = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b ON a.value = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3112070
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b ON a.value = b.value and a.key=b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a JOIN myinput1 b ON a.value = b.value and a.key=b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3078400
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b ON a.key = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b ON a.key = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4542003
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b ON a.value = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b ON a.value = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4542038
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b ON a.key = b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b ON a.key = b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4543491
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b ON a.key = b.key and a.value=b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b ON a.key = b.key and a.value=b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4542003
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b ON a.key = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b ON a.key = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3079923
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b ON a.key = b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b ON a.key = b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4509891
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b ON a.value = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b ON a.value = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3113558
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b ON a.key=b.key and a.value = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b ON a.key=b.key and a.value = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3079923
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a FULL OUTER JOIN myinput1 b ON a.key = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a FULL OUTER JOIN myinput1 b ON a.key = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4543526
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a FULL OUTER JOIN myinput1 b ON a.key = b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a FULL OUTER JOIN myinput1 b ON a.key = b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4543526
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a FULL OUTER JOIN myinput1 b ON a.value = b.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a FULL OUTER JOIN myinput1 b ON a.value = b.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4543526
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a FULL OUTER JOIN myinput1 b ON a.value = b.value and a.key=b.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a FULL OUTER JOIN myinput1 b ON a.value = b.value and a.key=b.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+4543526
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) from myinput1 a LEFT OUTER JOIN myinput1 b ON (a.value=b.value) RIGHT OUTER JOIN myinput1 c ON (b.value=c.value)
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) from myinput1 a LEFT OUTER JOIN myinput1 b ON (a.value=b.value) RIGHT OUTER JOIN myinput1 c ON (b.value=c.value)
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3112070
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) from myinput1 a RIGHT OUTER JOIN myinput1 b ON (a.value=b.value) LEFT OUTER JOIN myinput1 c ON (b.value=c.value)
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) from myinput1 a RIGHT OUTER JOIN myinput1 b ON (a.value=b.value) LEFT OUTER JOIN myinput1 c ON (b.value=c.value)
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3113558
+PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b RIGHT OUTER JOIN myinput1 c ON a.value = b.value and b.value = c.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+POSTHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b RIGHT OUTER JOIN myinput1 c ON a.value = b.value and b.value = c.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@myinput1
+#### A masked pattern was here ####
+3112070

http://git-wip-us.apache.org/repos/asf/hive/blob/ae1c7153/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_6.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_6.q.out b/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_6.q.out
new file mode 100644
index 0000000..16a6f43
--- /dev/null
+++ b/ql/src/test/results/clientpositive/llap/auto_sortmerge_join_6.q.out
@@ -0,0 +1,1200 @@
+PREHOOK: query: CREATE TABLE tbl1(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@tbl1
+POSTHOOK: query: CREATE TABLE tbl1(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@tbl1
+PREHOOK: query: CREATE TABLE tbl2(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@tbl2
+POSTHOOK: query: CREATE TABLE tbl2(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@tbl2
+PREHOOK: query: CREATE TABLE tbl3(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@tbl3
+POSTHOOK: query: CREATE TABLE tbl3(key int, value string) CLUSTERED BY (key) SORTED BY (key) INTO 2 BUCKETS
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@tbl3
+PREHOOK: query: CREATE TABLE tbl4(key int, value string) CLUSTERED BY (value) SORTED BY (value) INTO 2 BUCKETS
+PREHOOK: type: CREATETABLE
+PREHOOK: Output: database:default
+PREHOOK: Output: default@tbl4
+POSTHOOK: query: CREATE TABLE tbl4(key int, value string) CLUSTERED BY (value) SORTED BY (value) INTO 2 BUCKETS
+POSTHOOK: type: CREATETABLE
+POSTHOOK: Output: database:default
+POSTHOOK: Output: default@tbl4
+PREHOOK: query: insert overwrite table tbl1 select * from src
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Output: default@tbl1
+POSTHOOK: query: insert overwrite table tbl1 select * from src
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Output: default@tbl1
+POSTHOOK: Lineage: tbl1.key EXPRESSION [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: tbl1.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+PREHOOK: query: insert overwrite table tbl2 select * from src
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Output: default@tbl2
+POSTHOOK: query: insert overwrite table tbl2 select * from src
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Output: default@tbl2
+POSTHOOK: Lineage: tbl2.key EXPRESSION [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: tbl2.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+PREHOOK: query: insert overwrite table tbl3 select * from src
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Output: default@tbl3
+POSTHOOK: query: insert overwrite table tbl3 select * from src
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Output: default@tbl3
+POSTHOOK: Lineage: tbl3.key EXPRESSION [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: tbl3.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+PREHOOK: query: insert overwrite table tbl4 select * from src
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Output: default@tbl4
+POSTHOOK: query: insert overwrite table tbl4 select * from src
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Output: default@tbl4
+POSTHOOK: Lineage: tbl4.key EXPRESSION [(src)src.FieldSchema(name:key, type:string, comment:default), ]
+POSTHOOK: Lineage: tbl4.value SIMPLE [(src)src.FieldSchema(name:value, type:string, comment:default), ]
+PREHOOK: query: -- A SMB join is being followed by a regular join on a non-bucketed table on a different key
+
+-- Three tests below are all the same query with different alias, which changes dispatch order of GenMapRedWalker
+-- This is dependent to iteration order of HashMap, so can be meaningless in non-sun jdk
+-- b = TS[0]-OP[13]-MAPJOIN[11]-RS[6]-JOIN[8]-SEL[9]-FS[10]
+-- c = TS[1]-RS[7]-JOIN[8]
+-- a = TS[2]-MAPJOIN[11]
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.value = a.value
+PREHOOK: type: QUERY
+POSTHOOK: query: -- A SMB join is being followed by a regular join on a non-bucketed table on a different key
+
+-- Three tests below are all the same query with different alias, which changes dispatch order of GenMapRedWalker
+-- This is dependent to iteration order of HashMap, so can be meaningless in non-sun jdk
+-- b = TS[0]-OP[13]-MAPJOIN[11]-RS[6]-JOIN[8]-SEL[9]-FS[10]
+-- c = TS[1]-RS[7]-JOIN[8]
+-- a = TS[2]-MAPJOIN[11]
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.value = a.value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and value is not null) (type: boolean)
+                    Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+                    Merge Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 key (type: int)
+                        1 key (type: int)
+                      outputColumnNames: _col1
+                      Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col1 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col1 (type: string)
+                        Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: value is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: value (type: string)
+                      sort order: +
+                      Map-reduce partition columns: value (type: string)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 _col1 (type: string)
+                  1 value (type: string)
+                Statistics: Num rows: 302 Data size: 3213 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count()
+                  mode: hash
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    sort order: 
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col0 (type: bigint)
+        Reducer 3 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.value = a.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.value = a.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- d = TS[0]-RS[7]-JOIN[8]-SEL[9]-FS[10]
+-- b = TS[1]-OP[13]-MAPJOIN[11]-RS[6]-JOIN[8]
+-- a = TS[2]-MAPJOIN[11]
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src d on d.value = a.value
+PREHOOK: type: QUERY
+POSTHOOK: query: -- d = TS[0]-RS[7]-JOIN[8]-SEL[9]-FS[10]
+-- b = TS[1]-OP[13]-MAPJOIN[11]-RS[6]-JOIN[8]
+-- a = TS[2]-MAPJOIN[11]
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src d on d.value = a.value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and value is not null) (type: boolean)
+                    Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+                    Merge Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 key (type: int)
+                        1 key (type: int)
+                      outputColumnNames: _col1
+                      Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col1 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col1 (type: string)
+                        Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: d
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: value is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: value (type: string)
+                      sort order: +
+                      Map-reduce partition columns: value (type: string)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 _col1 (type: string)
+                  1 value (type: string)
+                Statistics: Num rows: 302 Data size: 3213 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count()
+                  mode: hash
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    sort order: 
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col0 (type: bigint)
+        Reducer 3 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src d on d.value = a.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src d on d.value = a.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- b = TS[0]-OP[13]-MAPJOIN[11]-RS[6]-JOIN[8]-SEL[9]-FS[10]
+-- a = TS[1]-MAPJOIN[11]
+-- h = TS[2]-RS[7]-JOIN[8]
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src h on h.value = a.value
+PREHOOK: type: QUERY
+POSTHOOK: query: -- b = TS[0]-OP[13]-MAPJOIN[11]-RS[6]-JOIN[8]-SEL[9]-FS[10]
+-- a = TS[1]-MAPJOIN[11]
+-- h = TS[2]-RS[7]-JOIN[8]
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src h on h.value = a.value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and value is not null) (type: boolean)
+                    Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+                    Merge Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 key (type: int)
+                        1 key (type: int)
+                      outputColumnNames: _col1
+                      Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col1 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col1 (type: string)
+                        Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: h
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: value is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: value (type: string)
+                      sort order: +
+                      Map-reduce partition columns: value (type: string)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 _col1 (type: string)
+                  1 value (type: string)
+                Statistics: Num rows: 302 Data size: 3213 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count()
+                  mode: hash
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    sort order: 
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col0 (type: bigint)
+        Reducer 3 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src h on h.value = a.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src h on h.value = a.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- A SMB join is being followed by a regular join on a non-bucketed table on the same key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.key = a.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- A SMB join is being followed by a regular join on a non-bucketed table on the same key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.key = a.key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 4 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 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
+                  Filter Operator
+                    predicate: UDFToDouble(key) is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: UDFToDouble(key) (type: double)
+                      sort order: +
+                      Map-reduce partition columns: UDFToDouble(key) (type: double)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: UDFToDouble(key) is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: UDFToDouble(key) (type: double)
+                      sort order: +
+                      Map-reduce partition columns: UDFToDouble(key) (type: double)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: UDFToDouble(key) is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: UDFToDouble(key) (type: double)
+                      sort order: +
+                      Map-reduce partition columns: UDFToDouble(key) (type: double)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                     Inner Join 0 to 2
+                keys:
+                  0 UDFToDouble(key) (type: double)
+                  1 UDFToDouble(key) (type: double)
+                  2 UDFToDouble(key) (type: double)
+                Statistics: Num rows: 550 Data size: 5843 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count()
+                  mode: hash
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    sort order: 
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col0 (type: bigint)
+        Reducer 3 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.key = a.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.key = a.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- A SMB join is being followed by a regular join on a bucketed table on the same key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl3 c on c.key = a.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- A SMB join is being followed by a regular join on a bucketed table on the same key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl3 c on c.key = a.key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Merge Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                           Inner Join 0 to 2
+                      keys:
+                        0 key (type: int)
+                        1 key (type: int)
+                        2 key (type: int)
+                      Statistics: Num rows: 550 Data size: 5843 Basic stats: COMPLETE Column stats: NONE
+                      Group By Operator
+                        aggregations: count()
+                        mode: hash
+                        outputColumnNames: _col0
+                        Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                        Reduce Output Operator
+                          sort order: 
+                          Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                          value expressions: _col0 (type: bigint)
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl3 c on c.key = a.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+PREHOOK: Input: default@tbl3
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl3 c on c.key = a.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+POSTHOOK: Input: default@tbl3
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- A SMB join is being followed by a regular join on a bucketed table on a different key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl4 c on c.value = a.value
+PREHOOK: type: QUERY
+POSTHOOK: query: -- A SMB join is being followed by a regular join on a bucketed table on a different key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl4 c on c.value = a.value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and value is not null) (type: boolean)
+                    Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+                    Merge Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 key (type: int)
+                        1 key (type: int)
+                      outputColumnNames: _col1
+                      Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col1 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col1 (type: string)
+                        Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: value is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: value (type: string)
+                      sort order: +
+                      Map-reduce partition columns: value (type: string)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 _col1 (type: string)
+                  1 value (type: string)
+                Statistics: Num rows: 302 Data size: 3213 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count()
+                  mode: hash
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    sort order: 
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col0 (type: bigint)
+        Reducer 3 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl4 c on c.value = a.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+PREHOOK: Input: default@tbl4
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl4 c on c.value = a.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+POSTHOOK: Input: default@tbl4
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- A SMB join is being followed by a regular join on a non-bucketed table on a different key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.value = a.value
+PREHOOK: type: QUERY
+POSTHOOK: query: -- A SMB join is being followed by a regular join on a non-bucketed table on a different key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.value = a.value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and value is not null) (type: boolean)
+                    Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+                    Merge Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 key (type: int)
+                        1 key (type: int)
+                      outputColumnNames: _col1
+                      Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col1 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col1 (type: string)
+                        Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: value is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: value (type: string)
+                      sort order: +
+                      Map-reduce partition columns: value (type: string)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 _col1 (type: string)
+                  1 value (type: string)
+                Statistics: Num rows: 302 Data size: 3213 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count()
+                  mode: hash
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    sort order: 
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col0 (type: bigint)
+        Reducer 3 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.value = a.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.value = a.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- A SMB join is being followed by a regular join on a non-bucketed table on the same key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.key = a.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- A SMB join is being followed by a regular join on a non-bucketed table on the same key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.key = a.key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 4 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 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
+                  Filter Operator
+                    predicate: UDFToDouble(key) is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: UDFToDouble(key) (type: double)
+                      sort order: +
+                      Map-reduce partition columns: UDFToDouble(key) (type: double)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 4 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: UDFToDouble(key) is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: UDFToDouble(key) (type: double)
+                      sort order: +
+                      Map-reduce partition columns: UDFToDouble(key) (type: double)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: UDFToDouble(key) is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: UDFToDouble(key) (type: double)
+                      sort order: +
+                      Map-reduce partition columns: UDFToDouble(key) (type: double)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                     Inner Join 0 to 2
+                keys:
+                  0 UDFToDouble(key) (type: double)
+                  1 UDFToDouble(key) (type: double)
+                  2 UDFToDouble(key) (type: double)
+                Statistics: Num rows: 550 Data size: 5843 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count()
+                  mode: hash
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    sort order: 
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col0 (type: bigint)
+        Reducer 3 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.key = a.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@src
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join src c on c.key = a.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@src
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- A SMB join is being followed by a regular join on a bucketed table on the same key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl3 c on c.key = a.key
+PREHOOK: type: QUERY
+POSTHOOK: query: -- A SMB join is being followed by a regular join on a bucketed table on the same key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl3 c on c.key = a.key
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Merge Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                           Inner Join 0 to 2
+                      keys:
+                        0 key (type: int)
+                        1 key (type: int)
+                        2 key (type: int)
+                      Statistics: Num rows: 550 Data size: 5843 Basic stats: COMPLETE Column stats: NONE
+                      Group By Operator
+                        aggregations: count()
+                        mode: hash
+                        outputColumnNames: _col0
+                        Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                        Reduce Output Operator
+                          sort order: 
+                          Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                          value expressions: _col0 (type: bigint)
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl3 c on c.key = a.key
+PREHOOK: type: QUERY
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+PREHOOK: Input: default@tbl3
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl3 c on c.key = a.key
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+POSTHOOK: Input: default@tbl3
+#### A masked pattern was here ####
+2654
+PREHOOK: query: -- A SMB join is being followed by a regular join on a bucketed table on a different key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl4 c on c.value = a.value
+PREHOOK: type: QUERY
+POSTHOOK: query: -- A SMB join is being followed by a regular join on a bucketed table on a different key
+explain select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl4 c on c.value = a.value
+POSTHOOK: type: QUERY
+STAGE DEPENDENCIES:
+  Stage-1 is a root stage
+  Stage-0 depends on stages: Stage-1
+
+STAGE PLANS:
+  Stage: Stage-1
+    Tez
+      Edges:
+        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 5 (SIMPLE_EDGE)
+        Reducer 3 <- Reducer 2 (SIMPLE_EDGE)
+#### A masked pattern was here ####
+      Vertices:
+        Map 1 
+            Map Operator Tree:
+                TableScan
+                  alias: b
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: key is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Map Operator Tree:
+                TableScan
+                  alias: a
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: (key is not null and value is not null) (type: boolean)
+                    Statistics: Num rows: 125 Data size: 1328 Basic stats: COMPLETE Column stats: NONE
+                    Merge Join Operator
+                      condition map:
+                           Inner Join 0 to 1
+                      keys:
+                        0 key (type: int)
+                        1 key (type: int)
+                      outputColumnNames: _col1
+                      Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+                      Reduce Output Operator
+                        key expressions: _col1 (type: string)
+                        sort order: +
+                        Map-reduce partition columns: _col1 (type: string)
+                        Statistics: Num rows: 275 Data size: 2921 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Map 5 
+            Map Operator Tree:
+                TableScan
+                  alias: c
+                  Statistics: Num rows: 500 Data size: 5312 Basic stats: COMPLETE Column stats: NONE
+                  Filter Operator
+                    predicate: value is not null (type: boolean)
+                    Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+                    Reduce Output Operator
+                      key expressions: value (type: string)
+                      sort order: +
+                      Map-reduce partition columns: value (type: string)
+                      Statistics: Num rows: 250 Data size: 2656 Basic stats: COMPLETE Column stats: NONE
+            Execution mode: llap
+        Reducer 2 
+            Execution mode: llap
+            Reduce Operator Tree:
+              Merge Join Operator
+                condition map:
+                     Inner Join 0 to 1
+                keys:
+                  0 _col1 (type: string)
+                  1 value (type: string)
+                Statistics: Num rows: 302 Data size: 3213 Basic stats: COMPLETE Column stats: NONE
+                Group By Operator
+                  aggregations: count()
+                  mode: hash
+                  outputColumnNames: _col0
+                  Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                  Reduce Output Operator
+                    sort order: 
+                    Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                    value expressions: _col0 (type: bigint)
+        Reducer 3 
+            Execution mode: uber
+            Reduce Operator Tree:
+              Group By Operator
+                aggregations: count(VALUE._col0)
+                mode: mergepartial
+                outputColumnNames: _col0
+                Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
+                File Output Operator
+                  compressed: false
+                  Statistics: Num rows: 1 Data size: 8 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
+      limit: -1
+      Processor Tree:
+        ListSink
+
+PREHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl4 c on c.value = a.value
+PREHOOK: type: QUERY
+PREHOOK: Input: default@tbl1
+PREHOOK: Input: default@tbl2
+PREHOOK: Input: default@tbl4
+#### A masked pattern was here ####
+POSTHOOK: query: select count(*) FROM tbl1 a JOIN tbl2 b ON a.key = b.key join tbl4 c on c.value = a.value
+POSTHOOK: type: QUERY
+POSTHOOK: Input: default@tbl1
+POSTHOOK: Input: default@tbl2
+POSTHOOK: Input: default@tbl4
+#### A masked pattern was here ####
+2654

http://git-wip-us.apache.org/repos/asf/hive/blob/ae1c7153/ql/src/test/results/clientpositive/tez/auto_join_nulls.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/tez/auto_join_nulls.q.out b/ql/src/test/results/clientpositive/tez/auto_join_nulls.q.out
index 20d71f4..b9a759f 100644
--- a/ql/src/test/results/clientpositive/tez/auto_join_nulls.q.out
+++ b/ql/src/test/results/clientpositive/tez/auto_join_nulls.q.out
@@ -34,7 +34,7 @@ POSTHOOK: type: QUERY
 POSTHOOK: Input: default@myinput1
 #### A masked pattern was here ####
 13630578
-Warning: Map Join MAPJOIN[16][bigTable=?] in task 'Map 1' is a cross product
+Warning: Map Join MAPJOIN[15][bigTable=?] in task 'Map 1' is a cross product
 PREHOOK: query: SELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a RIGHT OUTER JOIN myinput1 b
 PREHOOK: type: QUERY
 PREHOOK: Input: default@myinput1

http://git-wip-us.apache.org/repos/asf/hive/blob/ae1c7153/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_6.q.out
----------------------------------------------------------------------
diff --git a/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_6.q.out b/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_6.q.out
index e6aec1a..9fc559d 100644
--- a/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_6.q.out
+++ b/ql/src/test/results/clientpositive/tez/auto_sortmerge_join_6.q.out
@@ -166,17 +166,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -285,17 +281,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -404,17 +396,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -519,17 +507,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -614,17 +598,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -729,17 +709,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -844,17 +820,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -959,17 +931,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -1054,17 +1022,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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
@@ -1169,17 +1133,13 @@ STAGE PLANS:
                 mode: mergepartial
                 outputColumnNames: _col0
                 Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                Select Operator
-                  expressions: _col0 (type: bigint)
-                  outputColumnNames: _col0
+                File Output Operator
+                  compressed: false
                   Statistics: Num rows: 1 Data size: 8 Basic stats: COMPLETE Column stats: NONE
-                  File Output Operator
-                    compressed: false
-                    Statistics: Num rows: 1 Data size: 8 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
+                  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