[GitHub] [spark] seanli-rallyhealth commented on a change in pull request #26911: [WIP][SPARK-30272][SQL][CORE] Remove usage of Guava that breaks in 27; replace with workalikes

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seanli-rallyhealth commented on a change in pull request #26911: [WIP][SPARK-30272][SQL][CORE] Remove usage of Guava that breaks in 27; replace with workalikes
URL: https://github.com/apache/spark/pull/26911#discussion_r358489660
 
 

 ##########
 File path: common/kvstore/src/test/java/org/apache/spark/util/kvstore/CustomType1.java
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 @@ -52,12 +50,7 @@ public int hashCode() {
 
   @Override
   public String toString() {
-    return Objects.toStringHelper(this)
-      .add("key", key)
-      .add("id", id)
-      .add("name", name)
-      .add("num", num)
-      .toString();
+    return "CustomType1[key=" + key + ",id=" + id + ",name=" + name + ",num=" + num;
 
 Review comment:
   why not use String Interpolation, e.g. s"CustomType1[key=$key, id=$id, name=$name, num=$num]"?
   

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