@Test public void testTimedWrite() throws Exception {
  File storeFile=File.createTempFile("feedback",".store");
  storeFile.deleteOnExit();
  final int recordCount=1000000;
  final FeedbackStore store=new FeedbackStore(storeFile,1);
  long start=System.nanoTime();
  for (int i=0; i < recordCount; i++) {
    store.append(i,"Hello World!".getBytes());
  }
  long end=System.nanoTime();
  System.out.printf("Writing %d records took %.3f ms.%n",recordCount,(end - start) / 1.0e6);
}