diff --git a/gerrit-lucene/src/main/java/com/google/gerrit/lucene/AbstractLuceneIndex.java b/gerrit-lucene/src/main/java/com/google/gerrit/lucene/AbstractLuceneIndex.java
index 5acdc25358..28ad605ab2 100644
--- a/gerrit-lucene/src/main/java/com/google/gerrit/lucene/AbstractLuceneIndex.java
+++ b/gerrit-lucene/src/main/java/com/google/gerrit/lucene/AbstractLuceneIndex.java
@@ -16,6 +16,7 @@ package com.google.gerrit.lucene;
 
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 
+import com.google.common.base.Joiner;
 import com.google.common.collect.Sets;
 import com.google.common.util.concurrent.AbstractFuture;
 import com.google.common.util.concurrent.ListenableFuture;
@@ -94,12 +95,14 @@ public abstract class AbstractLuceneIndex<K, V> implements Index<K, V> {
       Schema<V> schema,
       SitePaths sitePaths,
       Directory dir,
-      final String name,
+      String name,
+      String subIndex,
       GerritIndexWriterConfig writerConfig,
       SearcherFactory searcherFactory) throws IOException {
     this.schema = schema;
     this.sitePaths = sitePaths;
     this.dir = dir;
+    final String index = Joiner.on('_').skipNulls().join(name, subIndex);
     IndexWriter delegateWriter;
     long commitPeriod = writerConfig.getCommitWithinMs();
 
@@ -114,7 +117,7 @@ public abstract class AbstractLuceneIndex<K, V> implements Index<K, V> {
       delegateWriter = autoCommitWriter;
 
       new ScheduledThreadPoolExecutor(1, new ThreadFactoryBuilder()
-          .setNameFormat("Commit-%d " + name)
+          .setNameFormat("Commit-%d " + index)
           .setDaemon(true)
           .build())
           .scheduleAtFixedRate(new Runnable() {
@@ -126,13 +129,13 @@ public abstract class AbstractLuceneIndex<K, V> implements Index<K, V> {
                   autoCommitWriter.commit();
                 }
               } catch (IOException e) {
-                log.error("Error committing " + name + " Lucene index", e);
+                log.error("Error committing " + index + " Lucene index", e);
               } catch (OutOfMemoryError e) {
-                log.error("Error committing " + name + " Lucene index", e);
+                log.error("Error committing " + index + " Lucene index", e);
                 try {
                   autoCommitWriter.close();
                 } catch (IOException e2) {
-                  log.error("SEVERE: Error closing " + name
+                  log.error("SEVERE: Error closing " + index
                       + " Lucene index  after OOM; index may be corrupted.", e);
                 }
               }
diff --git a/gerrit-lucene/src/main/java/com/google/gerrit/lucene/ChangeSubIndex.java b/gerrit-lucene/src/main/java/com/google/gerrit/lucene/ChangeSubIndex.java
index ad5349383a..6f0df0f7bb 100644
--- a/gerrit-lucene/src/main/java/com/google/gerrit/lucene/ChangeSubIndex.java
+++ b/gerrit-lucene/src/main/java/com/google/gerrit/lucene/ChangeSubIndex.java
@@ -17,6 +17,7 @@ package com.google.gerrit.lucene;
 import static com.google.common.collect.Iterables.getOnlyElement;
 import static com.google.gerrit.lucene.LuceneChangeIndex.ID_SORT_FIELD;
 import static com.google.gerrit.lucene.LuceneChangeIndex.UPDATED_SORT_FIELD;
+import static com.google.gerrit.server.index.change.ChangeSchemaDefinitions.NAME;
 
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.server.config.SitePaths;
@@ -57,10 +58,11 @@ public class ChangeSubIndex extends AbstractLuceneIndex<Change.Id, ChangeData>
       Schema<ChangeData> schema,
       SitePaths sitePaths,
       Directory dir,
-      String name,
+      String subIndex,
       GerritIndexWriterConfig writerConfig,
       SearcherFactory searcherFactory) throws IOException {
-    super(schema, sitePaths, dir, name, writerConfig, searcherFactory);
+    super(schema, sitePaths, dir, NAME, subIndex, writerConfig,
+        searcherFactory);
   }
 
   @Override
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/index/change/ChangeSchemaDefinitions.java b/gerrit-server/src/main/java/com/google/gerrit/server/index/change/ChangeSchemaDefinitions.java
index 8fb900069a..1e59cdba80 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/index/change/ChangeSchemaDefinitions.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/index/change/ChangeSchemaDefinitions.java
@@ -70,10 +70,11 @@ public class ChangeSchemaDefinitions extends SchemaDefinitions<ChangeData> {
   static final Schema<ChangeData> V29 =
       schema(V28, ChangeField.HASHTAG_CASE_AWARE);
 
+  public static final String NAME = "changes";
   public static final ChangeSchemaDefinitions INSTANCE =
       new ChangeSchemaDefinitions();
 
   private ChangeSchemaDefinitions() {
-    super("changes", ChangeData.class);
+    super(NAME, ChangeData.class);
   }
 }