Index: lucene/test-framework/src/java/org/apache/lucene/store/MockDirectoryWrapper.java
===================================================================
--- lucene/test-framework/src/java/org/apache/lucene/store/MockDirectoryWrapper.java	(revision 1550820)
+++ lucene/test-framework/src/java/org/apache/lucene/store/MockDirectoryWrapper.java	(working copy)
@@ -215,6 +215,9 @@
     // clone the file map, as these guys want to remove themselves on close.
     Map<Closeable,Exception> m = new IdentityHashMap<Closeable,Exception>(openFileHandles);
     for (Closeable f : m.keySet()) {
+      if (f instanceof IndexInput) {
+        continue; // don't close the inputs someone might still read from it which is ok
+      }
       try {
         f.close();
       } catch (Exception ignored) {}