@BeforeClass
public static void beforeClass() throws Exception {
bench = new TestDFSIO();
bench.getConf().setBoolean(DFSConfigKeys.DFS_SUPPORT_APPEND_KEY, true);
cluster = new MiniDFSCluster.Builder(bench.getConf()).numDataNodes(2).format(true).build();
FileSystem fs = cluster.getFileSystem();
bench.createControlFile(fs, DEFAULT_NR_BYTES, DEFAULT_NR_FILES);
/** Check write here, as it is required for other tests */
testWrite();
}
@Test(timeout = 3000)
public void testReadSkip() throws Exception {
FileSystem fs = cluster.getFileSystem();
long tStart = System.currentTimeMillis();
bench.getConf().setLong("test.io.skip.size", 1);
bench.randomReadTest(fs);
long execTime = System.currentTimeMillis() - tStart;
bench.analyzeResult(fs, TestType.TEST_TYPE_READ_SKIP, execTime);
}
@Test(timeout = 3000)
public void testReadBackward() throws Exception {
FileSystem fs = cluster.getFileSystem();
long tStart = System.currentTimeMillis();
bench.getConf().setLong("test.io.skip.size", -DEFAULT_BUFFER_SIZE);
bench.randomReadTest(fs);
long execTime = System.currentTimeMillis() - tStart;
bench.analyzeResult(fs, TestType.TEST_TYPE_READ_BACKWARD, execTime);
}