From fe9678093e08fcf339ef848b9274a90a7c29495c Mon Sep 17 00:00:00 2001
From: Le-Zheng <30695225+Le-Zheng@users.noreply.github.com>
Date: Tue, 22 Jun 2021 02:49:35 +0100
Subject: [PATCH] make default DistriOptimizer as V2 (#3129)

* make default DistriOptimizer as V2

* update
---
 .../main/scala/com/intel/analytics/bigdl/common/Engine.scala  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dl/src/main/scala/com/intel/analytics/bigdl/common/Engine.scala b/dl/src/main/scala/com/intel/analytics/bigdl/common/Engine.scala
index 2b063160010..ff03e2b3678 100644
--- a/dl/src/main/scala/com/intel/analytics/bigdl/common/Engine.scala
+++ b/dl/src/main/scala/com/intel/analytics/bigdl/common/Engine.scala
@@ -225,10 +225,10 @@ object Engine {
 
   /**
    * Notice: Please use property bigdl.optimizerVersion to set optimizerVersion.
-   * Default version is OptimizerV1
+   * Default version is OptimizerV2
    */
   private var optimizerVersion: OptimizerVersion = {
-    System.getProperty("bigdl.optimizerVersion", "optimizerv1").toLowerCase(Locale.ROOT) match {
+    System.getProperty("bigdl.optimizerVersion", "optimizerv2").toLowerCase(Locale.ROOT) match {
       case "optimizerv1" => OptimizerV1
       case "optimizerv2" => OptimizerV2
       case optimizerVersion => throw new IllegalArgumentException(s"Unknown type $optimizerVersion")