--- old/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileStore.java	2016-11-16 10:28:21.375497930 -0800
+++ new/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileStore.java	2016-11-16 10:28:21.318497929 -0800
@@ -89,6 +89,11 @@
     }
 
     @Override
+    public int getBlockSize() throws IOException {
+         throw new UnsupportedOperationException("getBlockSize");
+    }
+
+    @Override
     public long getUsableSpace() throws IOException {
          return new ZipFileStoreAttributes(this).usableSpace();
     }