From 32a23dd5ec3bd227c38fe14518494856e094fae3 Mon Sep 17 00:00:00 2001
From: kenji yoshida <6b656e6a69@gmail.com>
Date: Wed, 8 Nov 2017 12:04:36 +0900
Subject: [PATCH] fix deprecation warning in project/MultiNode.scala (#23941)
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```
project/MultiNode.scala:46:12: method unapplySeq in class Regex is deprecated (since 2.11.0): extracting a match result from anything but a CharSequence or Match is deprecated
[warn]       case MultinodeJvmArgs(a, b) ⇒
[warn]            ^
```

- https://github.com/scala/scala/blob/v2.12.4/src/library/scala/util/matching/Regex.scala#L340
- https://docs.oracle.com/javase/8/docs/api/java/util/Properties.html

`System.getProperties.propertyNames.asScala.toList` return `List[Any]`
---
 project/MultiNode.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/project/MultiNode.scala b/project/MultiNode.scala
index 93b04aa757..59a9709e91 100644
--- a/project/MultiNode.scala
+++ b/project/MultiNode.scala
@@ -42,7 +42,7 @@ object MultiNode extends AutoPlugin {
     // -DMultiJvm.akka.cluster.Stress.nrOfNodes=15
     val MultinodeJvmArgs = "multinode\\.(D|X)(.*)".r
     val knownPrefix = Set("multnode.", "akka.", "MultiJvm.")
-    val akkaProperties = System.getProperties.propertyNames.asScala.toList.collect {
+    val akkaProperties = System.getProperties.stringPropertyNames.asScala.toList.collect {
       case MultinodeJvmArgs(a, b) ⇒
         val value = System.getProperty("multinode." + a + b)
         "-" + a + b + (if (value == "") "" else "=" + value)