@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);
}
@Override // Tool
public int run(String[] args) throws IOException {
TestType testType = null;
int bufferSize = DEFAULT_BUFFER_SIZE;
long nrBytes = 1 * MEGA;
int nrFiles = 1;
long skipSize = 0;
String resFileName = DEFAULT_RES_FILE_NAME;
String compressionClass = null;
boolean isSequential = false;
String version = TestDFSIO.class.getSimpleName() + ".1.7";
LOG.info(version);
if (args.length == 0) {
System.err.println("Missing arguments.");
return -1;
}
for (int i = 0; i < args.length; i++) { // parse command line
if (args[i].startsWith("-read")) {
testType = TestType.TEST_TYPE_READ;
} else if (args[i].equals("-write")) {
testType = TestType.TEST_TYPE_WRITE;
} else if (args[i].equals("-append")) {
testType = TestType.TEST_TYPE_APPEND;
} else if (args[i].equals("-random")) {
if (testType != TestType.TEST_TYPE_READ) return -1;
testType = TestType.TEST_TYPE_READ_RANDOM;
} else if (args[i].equals("-backward")) {
if (testType != TestType.TEST_TYPE_READ) return -1;
testType = TestType.TEST_TYPE_READ_BACKWARD;
} else if (args[i].equals("-skip")) {
if (testType != TestType.TEST_TYPE_READ) return -1;
testType = TestType.TEST_TYPE_READ_SKIP;
} else if (args[i].equals("-clean")) {
testType = TestType.TEST_TYPE_CLEANUP;
} else if (args[i].startsWith("-seq")) {
isSequential = true;
} else if (args[i].startsWith("-compression")) {
compressionClass = args[++i];
} else if (args[i].equals("-nrFiles")) {
nrFiles = Integer.parseInt(args[++i]);
} else if (args[i].equals("-fileSize") || args[i].equals("-size")) {
nrBytes = parseSize(args[++i]);
} else if (args[i].equals("-skipSize")) {
skipSize = parseSize(args[++i]);
} else if (args[i].equals("-bufferSize")) {
bufferSize = Integer.parseInt(args[++i]);
} else if (args[i].equals("-resFile")) {
resFileName = args[++i];
} else {
System.err.println("Illegal argument: " + args[i]);
return -1;
}
}
if (testType == null) return -1;
if (testType == TestType.TEST_TYPE_READ_BACKWARD) skipSize = -bufferSize;
else if (testType == TestType.TEST_TYPE_READ_SKIP && skipSize == 0) skipSize = bufferSize;
LOG.info("nrFiles = " + nrFiles);
LOG.info("nrBytes (MB) = " + toMB(nrBytes));
LOG.info("bufferSize = " + bufferSize);
if (skipSize > 0) LOG.info("skipSize = " + skipSize);
LOG.info("baseDir = " + getBaseDir(config));
if (compressionClass != null) {
config.set("test.io.compression.class", compressionClass);
LOG.info("compressionClass = " + compressionClass);
}
config.setInt("test.io.file.buffer.size", bufferSize);
config.setLong("test.io.skip.size", skipSize);
config.setBoolean(DFSConfigKeys.DFS_SUPPORT_APPEND_KEY, true);
FileSystem fs = FileSystem.get(config);
if (isSequential) {
long tStart = System.currentTimeMillis();
sequentialTest(fs, testType, nrBytes, nrFiles);
long execTime = System.currentTimeMillis() - tStart;
String resultLine = "Seq Test exec time sec: " + (float) execTime / 1000;
LOG.info(resultLine);
return 0;
}
if (testType == TestType.TEST_TYPE_CLEANUP) {
cleanup(fs);
return 0;
}
createControlFile(fs, nrBytes, nrFiles);
long tStart = System.currentTimeMillis();
switch (testType) {
case TEST_TYPE_WRITE:
writeTest(fs);
break;
case TEST_TYPE_READ:
readTest(fs);
break;
case TEST_TYPE_APPEND:
appendTest(fs);
break;
case TEST_TYPE_READ_RANDOM:
case TEST_TYPE_READ_BACKWARD:
case TEST_TYPE_READ_SKIP:
randomReadTest(fs);
}
long execTime = System.currentTimeMillis() - tStart;
analyzeResult(fs, testType, execTime, resFileName);
return 0;
}