diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/data/index/IndexDataGetter.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/data/index/IndexDataGetter.java
index 74b49f4c9d45..8c987275c077 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/data/index/IndexDataGetter.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/data/index/IndexDataGetter.java
@@ -25,7 +25,6 @@ import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.util.Processor;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.indexing.StorageException;
-import com.intellij.util.io.PersistentHashMap;
 import com.intellij.util.io.PersistentMap;
 import com.intellij.vcs.log.*;
 import com.intellij.vcs.log.data.VcsLogStorage;
@@ -234,12 +233,7 @@ public class IndexDataGetter {
         }
         return true;
       };
-      if (myIndexStorage.messages instanceof PersistentHashMap) {
-        ((PersistentHashMap<Integer, T>)myIndexStorage.messages).processKeysWithExistingMapping(processor);
-      }
-      else {
-        myIndexStorage.messages.processKeys(processor);
-      }
+      myIndexStorage.commits.process(processor);
       return result;
     }, result);
   }
diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/util/PersistentSet.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/util/PersistentSet.java
index 4ca9a3ca4b1d..edc4e785ef09 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/util/PersistentSet.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/util/PersistentSet.java
@@ -15,6 +15,7 @@
  */
 package com.intellij.vcs.log.util;
 
+import com.intellij.util.Processor;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.IOException;
@@ -25,6 +26,8 @@ public interface PersistentSet<T> {
 
   void put(@NotNull T element) throws IOException;
 
+  void process(@NotNull Processor<T> processor) throws IOException;
+
   void flush();
 
   void markCorrupted();
diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/util/PersistentSetImpl.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/util/PersistentSetImpl.java
index a1d9f7078bcb..d81b4ce75178 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/util/PersistentSetImpl.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/util/PersistentSetImpl.java
@@ -15,6 +15,7 @@
  */
 package com.intellij.vcs.log.util;
 
+import com.intellij.util.Processor;
 import com.intellij.util.io.KeyDescriptor;
 import com.intellij.util.io.PagedFileStorage;
 import com.intellij.util.io.PersistentBTreeEnumerator;
@@ -43,6 +44,11 @@ public class PersistentSetImpl<T> extends PersistentBTreeEnumerator<T> implement
     enumerate(element);
   }
 
+  @Override
+  public void process(@NotNull Processor<T> processor) throws IOException {
+    processAllDataObject(processor, null);
+  }
+
   @Override
   public void flush() {
     force();