Merge "Add slice to the change indexing task description" into stable-3.5
diff --git a/java/com/google/gerrit/server/index/change/AllChangesIndexer.java b/java/com/google/gerrit/server/index/change/AllChangesIndexer.java
index b1ff504..46b3e7d 100644
--- a/java/com/google/gerrit/server/index/change/AllChangesIndexer.java
+++ b/java/com/google/gerrit/server/index/change/AllChangesIndexer.java
@@ -271,7 +271,10 @@
 
     @Override
     public String toString() {
-      return "Index all changes of project " + project.get();
+      if (slices == 1) {
+        return "Index all changes of project " + project.get();
+      }
+      return "Index changes slice " + slice + "/" + slices + " of project " + project.get();
     }
   }