From 418c5c2f804195751b929fe14105014115e9bdec Mon Sep 17 00:00:00 2001
From: Yizhi Liu <liuyizhi@apache.org>
Date: Thu, 6 Feb 2020 15:55:53 -0800
Subject: [PATCH] [Scala/Java] Remove unnecessary data slicing

---
 .../org/apache/mxnet/module/DataParallelExecutorGroup.scala     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scala-package/core/src/main/scala/org/apache/mxnet/module/DataParallelExecutorGroup.scala b/scala-package/core/src/main/scala/org/apache/mxnet/module/DataParallelExecutorGroup.scala
index 74e63be3916b..4154e121c451 100644
--- a/scala-package/core/src/main/scala/org/apache/mxnet/module/DataParallelExecutorGroup.scala
+++ b/scala-package/core/src/main/scala/org/apache/mxnet/module/DataParallelExecutorGroup.scala
@@ -33,7 +33,7 @@ private object DataParallelExecutorGroup {
                                majorAxis: Seq[Int]): Unit = {
     for (((dSrc, dTargets), axis) <- data zip targets zip majorAxis) {
       for (((sliceIdxStart, sliceIdxStop), dDst) <- dTargets) {
-        if (axis >= 0) {
+        if (axis >= 0 && (sliceIdxStart > 0 || sliceIdxStop < dSrc.shape(axis))) {
           // copy slice
           val shape = dSrc.shape
           val begin = Array.fill(shape.length)(0)