commit 947fc3cb209a6e7e37b435ea35f0d856f3c35dc7
author Yingyi Bu <yingyi@couchbase.com> Wed Jan 27 20:14:47 2016 -0800
committer Yingyi Bu <buyingyi@gmail.com> Wed Jan 27 20:42:09 2016 -0800
tree bc94f091ce2f771a1843734b36a6585f0894f757
parent bf34d187dd0077b81c01126bbd4b83a15519a425

ASTERIXDB-1005, ASTERIXDB-1263: Clean up subplan flattening:
1. Inline NestedTupleSource and remove SubplanOperator for special cases that
   join operators inside the SubplanOperator can be re-targeted for
   correlations;
2. Blindly inline NestedTupleSource and remove SubplanOperator for general cases
   where the condition of the special case is not met.

Change-Id: I4dd130a25f3c81272cc23f844ea20e376e990612
Reviewed-on: https://asterix-gerrit.ics.uci.edu/579
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Till Westmann <tillw@apache.org>

asterix-app/src/test/resources/optimizerts/results/query-ASTERIXDB-1005.plan

diff --git a/asterix-app/src/test/resources/optimizerts/results/query-ASTERIXDB-1005.plan b/asterix-app/src/test/resources/optimizerts/results/query-ASTERIXDB-1005.plan
new file mode 100644
index 0000000..de339c0
--- /dev/null
+++ b/asterix-app/src/test/resources/optimizerts/results/query-ASTERIXDB-1005.plan
@@ -0,0 +1,35 @@
+-- DISTRIBUTE_RESULT  |PARTITIONED|
+  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+    -- STREAM_PROJECT  |PARTITIONED|
+      -- ASSIGN  |PARTITIONED|
+        -- SORT_MERGE_EXCHANGE [$$15(ASC) ]  |PARTITIONED|
+          -- STABLE_SORT [$$15(ASC)]  |PARTITIONED|
+            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+              -- STREAM_PROJECT  |PARTITIONED|
+                -- STREAM_SELECT  |PARTITIONED|
+                  -- STREAM_PROJECT  |PARTITIONED|
+                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                      -- PRE_CLUSTERED_GROUP_BY[$$12]  |PARTITIONED|
+                              {
+                                -- AGGREGATE  |LOCAL|
+                                  -- STREAM_SELECT  |LOCAL|
+                                    -- NESTED_TUPLE_SOURCE  |LOCAL|
+                              }
+                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                          -- STABLE_SORT [$$12(ASC)]  |PARTITIONED|
+                            -- HASH_PARTITION_EXCHANGE [$$12]  |PARTITIONED|
+                              -- STREAM_PROJECT  |PARTITIONED|
+                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                  -- HYBRID_HASH_JOIN [$$1][$$13]  |PARTITIONED|
+                                    -- HASH_PARTITION_EXCHANGE [$$1]  |PARTITIONED|
+                                      -- UNNEST  |PARTITIONED|
+                                        -- STREAM_PROJECT  |PARTITIONED|
+                                          -- ASSIGN  |PARTITIONED|
+                                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                              -- DATASOURCE_SCAN  |PARTITIONED|
+                                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
+                                                  -- EMPTY_TUPLE_SOURCE  |PARTITIONED|
+                                    -- HASH_PARTITION_EXCHANGE [$$13]  |PARTITIONED|
+                                      -- ASSIGN  |UNPARTITIONED|
+                                        -- UNNEST  |UNPARTITIONED|
+                                          -- EMPTY_TUPLE_SOURCE  |UNPARTITIONED|