// the method which actually copies the caches locally and unjars/unzips them
// and does chmod for the files
private static Path localizeCache(
Configuration conf, URI cache, long confFileStamp, CacheStatus cacheStatus, boolean isArchive)
throws IOException {
FileSystem fs = getFileSystem(cache, conf);
FileSystem localFs = FileSystem.getLocal(conf);
Path parchive = null;
if (isArchive) {
parchive =
new Path(
cacheStatus.localizedLoadPath, new Path(cacheStatus.localizedLoadPath.getName()));
} else {
parchive = cacheStatus.localizedLoadPath;
}
if (!localFs.mkdirs(parchive.getParent())) {
throw new IOException(
"Mkdirs failed to create directory " + cacheStatus.localizedLoadPath.toString());
}
String cacheId = cache.getPath();
fs.copyToLocalFile(new Path(cacheId), parchive);
if (isArchive) {
String tmpArchive = parchive.toString().toLowerCase();
File srcFile = new File(parchive.toString());
File destDir = new File(parchive.getParent().toString());
if (tmpArchive.endsWith(".jar")) {
RunJar.unJar(srcFile, destDir);
} else if (tmpArchive.endsWith(".zip")) {
FileUtil.unZip(srcFile, destDir);
} else if (isTarFile(tmpArchive)) {
FileUtil.unTar(srcFile, destDir);
}
// else will not do anyhting
// and copy the file into the dir as it is
}
long cacheSize = FileUtil.getDU(new File(parchive.getParent().toString()));
cacheStatus.size = cacheSize;
addCacheInfoUpdate(cacheStatus);
// do chmod here
try {
// Setting recursive permission to grant everyone read and execute
Path localDir = new Path(cacheStatus.localizedBaseDir, cacheStatus.uniqueParentDir);
LOG.info("Doing chmod on localdir :" + localDir);
FileUtil.chmod(localDir.toString(), "ugo+rx", true);
} catch (InterruptedException e) {
LOG.warn("Exception in chmod" + e.toString());
}
// update cacheStatus to reflect the newly cached file
cacheStatus.mtime = getTimestamp(conf, cache);
return cacheStatus.localizedLoadPath;
}
/** Start the JobTracker process, listen on the indicated port */
JobTracker(Configuration conf) throws IOException {
//
// Grab some static constants
//
maxCurrentTasks = conf.getInt("mapred.tasktracker.tasks.maximum", 2);
RETIRE_JOB_INTERVAL = conf.getLong("mapred.jobtracker.retirejob.interval", 24 * 60 * 60 * 1000);
RETIRE_JOB_CHECK_INTERVAL = conf.getLong("mapred.jobtracker.retirejob.check", 60 * 1000);
TASK_ALLOC_EPSILON = conf.getFloat("mapred.jobtracker.taskalloc.loadbalance.epsilon", 0.2f);
PAD_FRACTION = conf.getFloat("mapred.jobtracker.taskalloc.capacitypad", 0.1f);
MIN_SLOTS_FOR_PADDING = 3 * maxCurrentTasks;
// This is a directory of temporary submission files. We delete it
// on startup, and can delete any files that we're done with
this.conf = conf;
JobConf jobConf = new JobConf(conf);
this.systemDir = jobConf.getSystemDir();
this.fs = FileSystem.get(conf);
FileUtil.fullyDelete(fs, systemDir);
fs.mkdirs(systemDir);
// Same with 'localDir' except it's always on the local disk.
jobConf.deleteLocalFiles(SUBDIR);
// Set ports, start RPC servers, etc.
InetSocketAddress addr = getAddress(conf);
this.localMachine = addr.getHostName();
this.port = addr.getPort();
this.interTrackerServer = RPC.getServer(this, addr.getPort(), 10, false, conf);
this.interTrackerServer.start();
Properties p = System.getProperties();
for (Iterator it = p.keySet().iterator(); it.hasNext(); ) {
String key = (String) it.next();
String val = (String) p.getProperty(key);
LOG.info("Property '" + key + "' is " + val);
}
this.infoPort = conf.getInt("mapred.job.tracker.info.port", 50030);
this.infoServer = new JobTrackerInfoServer(this, infoPort);
this.infoServer.start();
this.startTime = System.currentTimeMillis();
new Thread(this.expireTrackers).start();
new Thread(this.retireJobs).start();
new Thread(this.initJobs).start();
}
public void doTestTextBatchAppend() throws Exception {
LOG.debug("Starting...");
final long rollCount = 10;
final long batchSize = 2;
final String fileName = "PageView";
String newPath = testPath + "/singleTextBucket";
int totalEvents = 0;
int i = 1, j = 1;
// clear the test directory
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get(conf);
Path dirPath = new Path(newPath);
fs.delete(dirPath, true);
fs.mkdirs(dirPath);
Context context = new Context();
context.put("hdfs.path", newPath);
context.put("hdfs.rollCount", String.valueOf(rollCount));
context.put("hdfs.batchSize", String.valueOf(batchSize));
context.put("hdfs.filePrefix", "pageview");
Channel channel = new MemoryChannel();
Configurables.configure(channel, context);
sink.setChannel(channel);
sink.start();
Calendar eventDate = Calendar.getInstance();
Date currentDate = new Date();
Map<String, String> header = new HashMap<String, String>();
header.put("topic", "PageView");
List<String> bodies = Lists.newArrayList();
// 将测试的事件推入到通道中
for (i = 1; i <= (rollCount * 10) / batchSize; i++) {
Transaction txn = channel.getTransaction();
txn.begin();
for (j = 1; j <= batchSize; j++) {
header.put("timestamp", String.valueOf(currentDate.getTime()));
Event event = new SimpleEvent();
eventDate.clear();
eventDate.set(2014, i, i, i, 0);
String body = "Test." + i + "." + j;
event.setHeaders(header);
event.setBody(body.getBytes());
bodies.add(body);
channel.put(event);
totalEvents++;
}
txn.commit();
txn.close();
// execute sink to process the events
sink.process();
}
sink.stop();
FileStatus[] dirStat = fs.listStatus(dirPath);
Path fList[] = FileUtil.stat2Paths(dirStat);
long expectedFiles = totalEvents / rollCount;
if (totalEvents % rollCount > 0) {
expectedFiles++;
}
Assert.assertEquals(
"num files wrong, found: " + Lists.newArrayList(fList), expectedFiles, fList.length);
// 检查所有写入文件的内容
verifyOutputTextFiles(fs, conf, dirPath.toUri().getPath(), fileName, bodies);
}
