@Test
public void testLogFile() throws Exception {
FileSystem fs = dfsCluster.getFileSystem();
OutputStream out = fs.create(logFile);
InputStream in = new ByteArrayInputStream(
("instancePaths=/ivory/feed/agg-logs/path1/2010/10/10/20,"
+ "/ivory/feed/agg-logs/path1/2010/10/10/21,"
+ "/ivory/feed/agg-logs/path1/2010/10/10/22,"
+ "/ivory/feed/agg-logs/path1/2010/10/10/23")
.getBytes());