[SPARK-7824] [SQL] Collapse operator reordering and constant folding into a single batch.

SQL
```
select * from tableA join tableB on (a > 3 and b = d) or (a > 3 and b = e)
```
Plan before modify
```
== Optimized Logical Plan ==
Project [a#293,b#294,c#295,d#296,e#297]
 Join Inner, Some(((a#293 > 3) && ((b#294 = d#296) || (b#294 = e#297))))
  MetastoreRelation default, tablea, None
  MetastoreRelation default, tableb, None
```
Plan after modify
```
== Optimized Logical Plan ==
Project [a#293,b#294,c#295,d#296,e#297]
 Join Inner, Some(((b#294 = d#296) || (b#294 = e#297)))
  Filter (a#293 > 3)
   MetastoreRelation default, tablea, None
  MetastoreRelation default, tableb, None
```

CombineLimits ==> Limit(If(LessThan(ne, le), ne, le), grandChild) and LessThan is in BooleanSimplification ,  so CombineLimits  must before BooleanSimplification and BooleanSimplification must before PushPredicateThroughJoin.

Author: Zhongshuai Pei <[email protected]>
Author: DoingDone9 <[email protected]>

Closes apache#6351 from DoingDone9/master and squashes the following commits:

20de7be [Zhongshuai Pei] Update Optimizer.scala
7bc7d28 [Zhongshuai Pei] Merge pull request apache#17 from apache/master
0ba5f42 [Zhongshuai Pei] Update Optimizer.scala
f8b9314 [Zhongshuai Pei] Update FilterPushdownSuite.scala
c529d9f [Zhongshuai Pei] Update FilterPushdownSuite.scala
ae3af6d [Zhongshuai Pei] Update FilterPushdownSuite.scala
a04ffae [Zhongshuai Pei] Update Optimizer.scala
11beb61 [Zhongshuai Pei] Update FilterPushdownSuite.scala
f2ee5fe [Zhongshuai Pei] Update Optimizer.scala
be6b1d5 [Zhongshuai Pei] Update Optimizer.scala
b01e622 [Zhongshuai Pei] Merge pull request apache#15 from apache/master
8df716a [Zhongshuai Pei] Update FilterPushdownSuite.scala
d98bc35 [Zhongshuai Pei] Update FilterPushdownSuite.scala
fa65718 [Zhongshuai Pei] Update Optimizer.scala
ab8e9a6 [Zhongshuai Pei] Merge pull request apache#14 from apache/master
14952e2 [Zhongshuai Pei] Merge pull request apache#13 from apache/master
f03fe7f [Zhongshuai Pei] Merge pull request apache#12 from apache/master
f12fa50 [Zhongshuai Pei] Merge pull request apache#10 from apache/master
f61210c [Zhongshuai Pei] Merge pull request apache#9 from apache/master
34b1a9a [Zhongshuai Pei] Merge pull request apache#8 from apache/master
802261c [DoingDone9] Merge pull request apache#7 from apache/master
d00303b [DoingDone9] Merge pull request apache#6 from apache/master
98b134f [DoingDone9] Merge pull request apache#5 from apache/master
161cae3 [DoingDone9] Merge pull request apache#4 from apache/master
c87e8b6 [DoingDone9] Merge pull request #3 from apache/master
cb1852d [DoingDone9] Merge pull request #2 from apache/master
c3f046f [DoingDone9] Merge pull request #1 from apache/master

Author: pzzs

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala

@@ -38,21 +38,20 @@ object DefaultOptimizer extends Optimizer {
       EliminateSubQueries) ::
     Batch("Distinct", FixedPoint(100),
       ReplaceDistinctWithAggregate) ::
-    Batch("Operator Reordering", FixedPoint(100),
+    Batch("Operator Optimizations", FixedPoint(100),
       UnionPushdown,
       CombineFilters,
       PushPredicateThroughProject,
-      PushPredicateThroughJoin,
       PushPredicateThroughGenerate,
       ColumnPruning,
       ProjectCollapsing,
-      CombineLimits) ::
-    Batch("ConstantFolding", FixedPoint(100),
+      CombineLimits,
       NullPropagation,
       OptimizeIn,
       ConstantFolding,
       LikeSimplification,
       BooleanSimplification,
+      PushPredicateThroughJoin,
       SimplifyFilters,
       SimplifyCasts,
       SimplifyCaseConversionExpressions) ::

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/FilterPushdownSuite.scala

@@ -36,6 +36,7 @@ class FilterPushdownSuite extends PlanTest {
       Batch("Filter Pushdown", Once,
         CombineFilters,
         PushPredicateThroughProject,
+        BooleanSimplification,
         PushPredicateThroughJoin,
         PushPredicateThroughGenerate,
         ColumnPruning,
@@ -156,11 +157,9 @@ class FilterPushdownSuite extends PlanTest {
         .where('a === 1 && 'a === 2)
         .select('a).analyze
 
-
     comparePlans(optimized, correctAnswer)
   }
 
-
   test("joins: push to either side") {
     val x = testRelation.subquery('x)
     val y = testRelation.subquery('y)
@@ -198,6 +197,25 @@ class FilterPushdownSuite extends PlanTest {
     comparePlans(optimized, correctAnswer)
   }
 
+  test("joins: push to one side after transformCondition") {
+    val x = testRelation.subquery('x)
+    val y = testRelation1.subquery('y)
+
+    val originalQuery = {
+      x.join(y)
+       .where(("x.a".attr === 1 && "y.d".attr === "x.b".attr) ||
+              ("x.a".attr === 1 && "y.d".attr === "x.c".attr))
+    }
+
+    val optimized = Optimize.execute(originalQuery.analyze)
+    val left = testRelation.where('a === 1)
+    val right = testRelation1
+    val correctAnswer =
+      left.join(right, condition = Some("d".attr === "b".attr || "d".attr === "c".attr)).analyze
+
+    comparePlans(optimized, correctAnswer)
+  }
+
   test("joins: rewrite filter to push to either side") {
     val x = testRelation.subquery('x)
     val y = testRelation.subquery('y)
@@ -563,17 +581,16 @@ class FilterPushdownSuite extends PlanTest {
     // push down invalid
     val originalQuery1 = {
       x.select('a, 'b)
-        .sortBy(SortOrder('a, Ascending))
-        .select('b)
+       .sortBy(SortOrder('a, Ascending))
+       .select('b)
     }
 
     val optimized1 = Optimize.execute(originalQuery1.analyze)
     val correctAnswer1 =
       x.select('a, 'b)
-        .sortBy(SortOrder('a, Ascending))
-        .select('b).analyze
+       .sortBy(SortOrder('a, Ascending))
+       .select('b).analyze
 
     comparePlans(optimized1, analysis.EliminateSubQueries(correctAnswer1))
-
   }
 }