diff --git a/solr/core/src/java/org/apache/solr/core/ConfigSet.java b/solr/core/src/java/org/apache/solr/core/ConfigSet.java
index 7161bc1e0ab..7e175592590 100644
--- a/solr/core/src/java/org/apache/solr/core/ConfigSet.java
+++ b/solr/core/src/java/org/apache/solr/core/ConfigSet.java
@@ -30,7 +30,7 @@ public class ConfigSet {
   private final String name;
 
   private final SolrConfig solrconfig;
-  private IndexSchema schema;
+  private volatile IndexSchema schema;
 
   private final SchemaSupplier schemaSupplier;
 
diff --git a/solr/core/src/java/org/apache/solr/core/CoreContainer.java b/solr/core/src/java/org/apache/solr/core/CoreContainer.java
index 8ce74d74e10..bcc20399c3f 100644
--- a/solr/core/src/java/org/apache/solr/core/CoreContainer.java
+++ b/solr/core/src/java/org/apache/solr/core/CoreContainer.java
@@ -1589,13 +1589,7 @@ public class CoreContainer {
   public void reload(String name) {
     reload(name, null);
   }
-  public void reload(String name, UUID coreId, boolean async) {
-    if(async) {
-      runAsync(() -> reload(name, coreId));
-    } else {
-      reload(name, coreId);
-    }
-  }
+
   /**
    * Recreates a SolrCore.
    * While the new core is loading, requests will continue to be dispatched to
diff --git a/solr/core/src/java/org/apache/solr/core/SolrCore.java b/solr/core/src/java/org/apache/solr/core/SolrCore.java
index 15c8f107c74..2edb926ae1b 100644
--- a/solr/core/src/java/org/apache/solr/core/SolrCore.java
+++ b/solr/core/src/java/org/apache/solr/core/SolrCore.java
@@ -64,7 +64,6 @@ import com.codahale.metrics.Timer;
 import com.google.common.collect.Iterators;
 import com.google.common.collect.MapMaker;
 import org.apache.commons.io.FileUtils;
-import org.apache.lucene.util.ResourceLoader;
 import org.apache.lucene.codecs.Codec;
 import org.apache.lucene.index.DirectoryReader;
 import org.apache.lucene.index.IndexDeletionPolicy;
@@ -76,6 +75,7 @@ import org.apache.lucene.store.IOContext;
 import org.apache.lucene.store.IndexInput;
 import org.apache.lucene.store.IndexOutput;
 import org.apache.lucene.store.LockObtainFailedException;
+import org.apache.lucene.util.ResourceLoader;
 import org.apache.solr.client.solrj.impl.BinaryResponseParser;
 import org.apache.solr.cloud.CloudDescriptor;
 import org.apache.solr.cloud.RecoveryStrategy;
@@ -3107,7 +3107,7 @@ public final class SolrCore implements SolrInfoBean, Closeable {
         if (configHandler.getReloadLock().tryLock()) {
 
           try {
-            cc.reload(coreName, coreId, false);
+            cc.reload(coreName, coreId);
           } catch (SolrCoreState.CoreIsClosedException e) {
             /*no problem this core is already closed*/
           } finally {
diff --git a/solr/core/src/java/org/apache/solr/handler/SolrConfigHandler.java b/solr/core/src/java/org/apache/solr/handler/SolrConfigHandler.java
index 4a1aadb83bd..fc7ca3b6e2e 100644
--- a/solr/core/src/java/org/apache/solr/handler/SolrConfigHandler.java
+++ b/solr/core/src/java/org/apache/solr/handler/SolrConfigHandler.java
@@ -547,7 +547,7 @@ public class SolrConfigHandler extends RequestHandlerBase implements SolrCoreAwa
             latestVersion, 30);
       } else {
         SolrResourceLoader.persistConfLocally(loader, ConfigOverlay.RESOURCE_NAME, overlay.toByteArray());
-        req.getCore().getCoreContainer().reload(req.getCore().getName(), req.getCore().uniqueId, false);
+        req.getCore().getCoreContainer().reload(req.getCore().getName(), req.getCore().uniqueId);
         log.info("Executed config commands successfully and persisted to File System {}", ops);
       }
 
diff --git a/solr/core/src/java/org/apache/solr/schema/SchemaManager.java b/solr/core/src/java/org/apache/solr/schema/SchemaManager.java
index c04c9c36c77..f539969403c 100644
--- a/solr/core/src/java/org/apache/solr/schema/SchemaManager.java
+++ b/solr/core/src/java/org/apache/solr/schema/SchemaManager.java
@@ -132,7 +132,7 @@ public class SchemaManager {
             latestVersion = ZkController.persistConfigResourceToZooKeeper
                 (zkLoader, managedIndexSchema.getSchemaZkVersion(), managedIndexSchema.getResourceName(),
                  sw.toString().getBytes(StandardCharsets.UTF_8), true);
-            req.getCore().getCoreContainer().reload(req.getCore().getName(), req.getCore().uniqueId, false);
+            req.getCore().getCoreContainer().reload(req.getCore().getName(), req.getCore().uniqueId);
             break;
           } catch (ZkController.ResourceModifiedInZkException e) {
             log.info("Schema was modified by another node. Retrying..");
@@ -142,7 +142,7 @@ public class SchemaManager {
             //only for non cloud stuff
             managedIndexSchema.persistManagedSchema(false);
             core.setLatestSchema(managedIndexSchema);
-            core.getCoreContainer().reload(core.getName(), core.uniqueId, false);
+            core.getCoreContainer().reload(core.getName(), core.uniqueId);
           } catch (SolrException e) {
             log.warn(errorMsg);
             errors = singletonList(errorMsg + e.getMessage());