maheshk114 commented on a change in pull request #1147:
URL: https://github.com/apache/hive/pull/1147#discussion_r466825617



##########
File path: 
ql/src/test/results/clientpositive/llap/subquery_notexists_having.q.out
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@@ -31,7 +31,8 @@ STAGE PLANS:
     Tez
 #### A masked pattern was here ####
       Edges:
-        Reducer 2 <- Map 1 (SIMPLE_EDGE), Map 3 (SIMPLE_EDGE)
+        Reducer 2 <- Map 1 (SIMPLE_EDGE)

Review comment:
       yes ..the join is getting converted to SMB join ..and so no reducer is 
required. In case of anti join its not getting converted. That is because left 
outer is adding an extra group by which is making the RS node on left and right 
side  equal, the pre-condition for converting to SMB join. 




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