channel.stop();
File checkpoint = new File(checkpointDir, "checkpoint");
RandomAccessFile writer = new RandomAccessFile(checkpoint, "rw");
writer.seek(EventQueueBackingStoreFile.INDEX_CHECKPOINT_MARKER
* Serialization.SIZE_OF_LONG);
writer.writeLong(EventQueueBackingStoreFile.CHECKPOINT_INCOMPLETE);
writer.getFD().sync();
writer.close();
channel = createFileChannel(overrides);
channel.start();
Assert.assertTrue(channel.isOpen());