Repository: spark
Updated Branches:
  refs/heads/branch-1.6 9808735e0 -> d1c992fea


[SPARK-16488] Fix codegen variable namespace collision in pmod and partitionBy

This patch fixes a variable namespace collision bug in pmod and partitionBy

Regression test for one possible occurrence. A more general fix in 
`ExpressionEvalHelper.checkEvaluation` will be in a subsequent PR.

Author: Sameer Agarwal <sam...@databricks.com>

Closes #14144 from sameeragarwal/codegen-bug.

(cherry picked from commit 9cc74f95edb6e4f56151966139cd0dc24e377949)
Signed-off-by: Reynold Xin <r...@databricks.com>
(cherry picked from commit 689261465ad1dd443ebf764ad837243418b986ef)
Signed-off-by: Reynold Xin <r...@databricks.com>


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/d1c992fe
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/d1c992fe
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/d1c992fe

Branch: refs/heads/branch-1.6
Commit: d1c992fea3e5999a3494c398f5040d6102f30aff
Parents: 9808735
Author: Sameer Agarwal <sam...@databricks.com>
Authored: Mon Jul 11 20:26:01 2016 -0700
Committer: Reynold Xin <r...@databricks.com>
Committed: Tue Jul 12 23:13:19 2016 -0700

----------------------------------------------------------------------
 .../sql/catalyst/expressions/arithmetic.scala   | 25 ++++++++++----------
 1 file changed, 13 insertions(+), 12 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/spark/blob/d1c992fe/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala
----------------------------------------------------------------------
diff --git 
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala
 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala
index 61a17fd..cfae285 100644
--- 
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala
+++ 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala
@@ -445,34 +445,35 @@ case class Pmod(left: Expression, right: Expression) 
extends BinaryArithmetic {
 
   override def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode): 
String = {
     nullSafeCodeGen(ctx, ev, (eval1, eval2) => {
+      val remainder = ctx.freshName("remainder")
       dataType match {
         case dt: DecimalType =>
           val decimalAdd = "$plus"
           s"""
-            ${ctx.javaType(dataType)} r = $eval1.remainder($eval2);
-            if (r.compare(new org.apache.spark.sql.types.Decimal().set(0)) < 
0) {
-              ${ev.value} = (r.$decimalAdd($eval2)).remainder($eval2);
+            ${ctx.javaType(dataType)} $remainder = $eval1.remainder($eval2);
+            if ($remainder.compare(new 
org.apache.spark.sql.types.Decimal().set(0)) < 0) {
+              ${ev.value} = ($remainder.$decimalAdd($eval2)).remainder($eval2);
             } else {
-              ${ev.value} = r;
+              ${ev.value} = $remainder;
             }
           """
         // byte and short are casted into int when add, minus, times or divide
         case ByteType | ShortType =>
           s"""
-            ${ctx.javaType(dataType)} r = (${ctx.javaType(dataType)})($eval1 % 
$eval2);
-            if (r < 0) {
-              ${ev.value} = (${ctx.javaType(dataType)})((r + $eval2) % $eval2);
+            ${ctx.javaType(dataType)} $remainder = 
(${ctx.javaType(dataType)})($eval1 % $eval2);
+            if ($remainder < 0) {
+              ${ev.value} = (${ctx.javaType(dataType)})(($remainder + $eval2) 
% $eval2);
             } else {
-              ${ev.value} = r;
+              ${ev.value} = $remainder;
             }
           """
         case _ =>
           s"""
-            ${ctx.javaType(dataType)} r = $eval1 % $eval2;
-            if (r < 0) {
-              ${ev.value} = (r + $eval2) % $eval2;
+            ${ctx.javaType(dataType)} $remainder = $eval1 % $eval2;
+            if ($remainder < 0) {
+              ${ev.value} = ($remainder + $eval2) % $eval2;
             } else {
-              ${ev.value} = r;
+              ${ev.value} = $remainder;
             }
           """
       }


---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscr...@spark.apache.org
For additional commands, e-mail: commits-h...@spark.apache.org

Reply via email to