Internal: Remove originalSettings from Node (#36569)

This commit removes the originalSettings member from Node. It was only
needed to allows test clusters to recreate the node in certain
situations. Instead, the test cluster now keeps track of these settings.

server/src/main/java/org/elasticsearch/node/Node.java

@@ -238,7 +238,6 @@ public class Node implements Closeable {
     private final Logger logger;
     private final Injector injector;
     private final Settings settings;
-    private final Settings originalSettings;
     private final Environment environment;
     private final NodeEnvironment nodeEnvironment;
     private final PluginsService pluginsService;
@@ -265,7 +264,6 @@ protected Node(
         final List<Closeable> resourcesToClose = new ArrayList<>(); // register everything we need to release in the case of an error
         boolean success = false;
         try {
-            originalSettings = environment.settings();
             Settings tmpSettings = Settings.builder().put(environment.settings())
                 .put(Client.CLIENT_TYPE_SETTING_S.getKey(), CLIENT_TYPE).build();
 
@@ -595,13 +593,6 @@ protected void processRecoverySettings(ClusterSettings clusterSettings, Recovery
         // Noop in production, overridden by tests
     }
 
-    /**
-     * The original settings that were used to create the node
-     */
-    public Settings originalSettings() {
-        return originalSettings;
-    }
-
     /**
      * The settings that are used by this node. Contains original settings as well as additional settings provided by plugins.
      */

test/framework/src/main/java/org/elasticsearch/test/InternalTestCluster.java

@@ -660,8 +660,9 @@ private NodeAndClient buildNode(int nodeId, long seed, Settings settings,
             // we clone this here since in the case of a node restart we might need it again
             secureSettings = ((MockSecureSettings) secureSettings).clone();
         }
+        final Settings nodeSettings = finalSettings.build();
         MockNode node = new MockNode(
-                finalSettings.build(),
+                nodeSettings,
                 plugins,
                 nodeConfigurationSource.nodeConfigPath(nodeId),
                 forbidPrivateIndexSettings);
@@ -676,7 +677,7 @@ public void afterStart() {
         } catch (IOException e) {
             throw new UncheckedIOException(e);
         }
-        return new NodeAndClient(name, node, nodeId);
+        return new NodeAndClient(name, node, nodeSettings, nodeId);
     }
 
     private String buildNodeName(int id, Settings settings) {
@@ -820,15 +821,17 @@ public synchronized void close() {
 
     private final class NodeAndClient implements Closeable {
         private MockNode node;
+        private final Settings originalNodeSettings;
         private Client nodeClient;
         private Client transportClient;
         private final AtomicBoolean closed = new AtomicBoolean(false);
         private final String name;
         private final int nodeAndClientId;
 
-        NodeAndClient(String name, MockNode node, int nodeAndClientId) {
+        NodeAndClient(String name, MockNode node, Settings originalNodeSettings, int nodeAndClientId) {
             this.node = node;
             this.name = name;
+            this.originalNodeSettings = originalNodeSettings;
             this.nodeAndClientId = nodeAndClientId;
             markNodeDataDirsAsNotEligableForWipe(node);
         }
@@ -954,7 +957,7 @@ private void recreateNode(final Settings newSettings, final Runnable onTransport
             // use a new seed to make sure we have new node id
             final long newIdSeed = NodeEnvironment.NODE_ID_SEED_SETTING.get(node.settings()) + 1;
             Settings finalSettings = Settings.builder()
-                    .put(node.originalSettings())
+                    .put(originalNodeSettings)
                     .put(newSettings)
                     .put(NodeEnvironment.NODE_ID_SEED_SETTING.getKey(), newIdSeed)
                     .build();