diff --git a/server/src/internalClusterTest/java/org/elasticsearch/indices/recovery/IndexRecoveryIT.java b/server/src/internalClusterTest/java/org/elasticsearch/indices/recovery/IndexRecoveryIT.java
index d1831e164d76f..fa1348c82d71a 100644
--- a/server/src/internalClusterTest/java/org/elasticsearch/indices/recovery/IndexRecoveryIT.java
+++ b/server/src/internalClusterTest/java/org/elasticsearch/indices/recovery/IndexRecoveryIT.java
@@ -1052,8 +1052,7 @@ public void testDoNotInfinitelyWaitForMapping() {
         internalCluster().ensureAtLeastNumDataNodes(3);
         createIndex(
             "test",
-            indexSettings(1, 0)
-                .put("index.analysis.analyzer.test_analyzer.type", "custom")
+            indexSettings(1, 0).put("index.analysis.analyzer.test_analyzer.type", "custom")
                 .put("index.analysis.analyzer.test_analyzer.tokenizer", "standard")
                 .putList("index.analysis.analyzer.test_analyzer.filter", "test_token_filter")
                 .build()
diff --git a/server/src/internalClusterTest/java/org/elasticsearch/monitor/metrics/NodeIndexingMetricsIT.java b/server/src/internalClusterTest/java/org/elasticsearch/monitor/metrics/NodeIndexingMetricsIT.java
index 75357c7011bcf..77c4c5a804f77 100644
--- a/server/src/internalClusterTest/java/org/elasticsearch/monitor/metrics/NodeIndexingMetricsIT.java
+++ b/server/src/internalClusterTest/java/org/elasticsearch/monitor/metrics/NodeIndexingMetricsIT.java
@@ -32,10 +32,8 @@
 import org.elasticsearch.index.analysis.AbstractTokenFilterFactory;
 import org.elasticsearch.index.analysis.TokenFilterFactory;
 import org.elasticsearch.index.engine.VersionConflictEngineException;
-import org.elasticsearch.index.mapper.DocumentParsingException;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.indices.analysis.AnalysisModule;
-import org.elasticsearch.indices.recovery.IndexRecoveryIT;
 import org.elasticsearch.plugins.AnalysisPlugin;
 import org.elasticsearch.plugins.Plugin;
 import org.elasticsearch.plugins.PluginsService;
@@ -98,9 +96,9 @@ public void testZeroMetricsForVersionConflictsForNonIndexingOperations() {
         ensureStableCluster(1);
 
         final TestTelemetryPlugin plugin = internalCluster().getInstance(PluginsService.class, dataNode)
-                .filterPlugins(TestTelemetryPlugin.class)
-                .findFirst()
-                .orElseThrow();
+            .filterPlugins(TestTelemetryPlugin.class)
+            .findFirst()
+            .orElseThrow();
         plugin.resetMeter();
 
         assertAcked(prepareCreate("index_no_refresh", Settings.builder().put("index.refresh_interval", "-1")));
@@ -117,11 +115,10 @@ public void testZeroMetricsForVersionConflictsForNonIndexingOperations() {
             }
             {
                 var e = expectThrows(
-                        VersionConflictEngineException.class,
-                        () -> client(dataNode).get(
-                                new GetRequest(indexName, docId).version(10)
-                                        .versionType(randomFrom(VersionType.EXTERNAL, VersionType.EXTERNAL_GTE))
-                        ).actionGet()
+                    VersionConflictEngineException.class,
+                    () -> client(dataNode).get(
+                        new GetRequest(indexName, docId).version(10).versionType(randomFrom(VersionType.EXTERNAL, VersionType.EXTERNAL_GTE))
+                    ).actionGet()
                 );
                 assertThat(e.getMessage(), containsString("version conflict"));
                 assertThat(e.status(), is(RestStatus.CONFLICT));
@@ -132,12 +129,12 @@ public void testZeroMetricsForVersionConflictsForNonIndexingOperations() {
             client(dataNode).admin().indices().prepareRefresh(indexName).get();
             {
                 var e = expectThrows(
-                        VersionConflictEngineException.class,
-                        () -> client(dataNode).get(
-                                new GetRequest(indexName, docId).version(5)
-                                        .versionType(randomFrom(VersionType.EXTERNAL, VersionType.EXTERNAL_GTE))
-                                        .realtime(false)
-                        ).actionGet()
+                    VersionConflictEngineException.class,
+                    () -> client(dataNode).get(
+                        new GetRequest(indexName, docId).version(5)
+                            .versionType(randomFrom(VersionType.EXTERNAL, VersionType.EXTERNAL_GTE))
+                            .realtime(false)
+                    ).actionGet()
                 );
                 assertThat(e.getMessage(), containsString("version conflict"));
                 assertThat(e.status(), is(RestStatus.CONFLICT));
@@ -186,9 +183,9 @@ public void testMetricsForIndexingVersionConflicts() {
         ensureStableCluster(1);
 
         final TestTelemetryPlugin plugin = internalCluster().getInstance(PluginsService.class, dataNode)
-                .filterPlugins(TestTelemetryPlugin.class)
-                .findFirst()
-                .orElseThrow();
+            .filterPlugins(TestTelemetryPlugin.class)
+            .findFirst()
+            .orElseThrow();
         plugin.resetMeter();
 
         assertAcked(
@@ -223,9 +220,9 @@ public void testMetricsForIndexingVersionConflicts() {
         // if_seq_no conflict
         {
             var e = expectThrows(
-                    VersionConflictEngineException.class,
-                    () -> client(dataNode).index(new IndexRequest("test").id(docId).source(Map.of()).setIfSeqNo(1).setIfPrimaryTerm(1))
-                            .actionGet()
+                VersionConflictEngineException.class,
+                () -> client(dataNode).index(new IndexRequest("test").id(docId).source(Map.of()).setIfSeqNo(1).setIfPrimaryTerm(1))
+                    .actionGet()
             );
             assertThat(e.getMessage(), containsString("version conflict"));
             assertThat(e.status(), is(RestStatus.CONFLICT));
@@ -250,10 +247,8 @@ public void testMetricsForIndexingVersionConflicts() {
         {
             var e = expectThrows(
                 MapperParsingException.class,
-                () -> client(dataNode).index(
-                    new IndexRequest("test").id(docId + "other")
-                          .source(Map.of("test_field", "this will error"))
-                ).actionGet()
+                () -> client(dataNode).index(new IndexRequest("test").id(docId + "other").source(Map.of("test_field", "this will error")))
+                    .actionGet()
             );
             assertThat(e.status(), is(RestStatus.BAD_REQUEST));
         }
@@ -268,7 +263,6 @@ public void testMetricsForIndexingVersionConflicts() {
         assertThat(measurements.get(1).attributes(), is(Map.of("es.indexing.indexing.failed.cause", "version_conflict")));
     }
 
-
     public static final class TestAnalysisPlugin extends Plugin implements AnalysisPlugin {
         final AtomicBoolean throwParsingError = new AtomicBoolean(false);
 
diff --git a/server/src/main/java/org/elasticsearch/monitor/metrics/NodeMetrics.java b/server/src/main/java/org/elasticsearch/monitor/metrics/NodeMetrics.java
index 66e733a4cf7c9..f6bce105ee591 100644
--- a/server/src/main/java/org/elasticsearch/monitor/metrics/NodeMetrics.java
+++ b/server/src/main/java/org/elasticsearch/monitor/metrics/NodeMetrics.java
@@ -29,7 +29,6 @@
 import java.io.IOException;
 import java.net.InetAddress;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;