List of usage examples for org.apache.hadoop.mapreduce.protocol ClientProtocol versionID
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From source file:skewtune.mapreduce.STJobTracker.java
License:Apache License
@SuppressWarnings("unchecked") STJobTracker(final JobConf conf, String jobtrackerIndentifier) throws IOException, InterruptedException { // find the owner of the process // get the desired principal to load String keytabFilename = conf.get(JTConfig.JT_KEYTAB_FILE); UserGroupInformation.setConfiguration(conf); if (keytabFilename != null) { String desiredUser = conf.get(JTConfig.JT_USER_NAME, System.getProperty("user.name")); UserGroupInformation.loginUserFromKeytab(desiredUser, keytabFilename); mrOwner = UserGroupInformation.getLoginUser(); } else {//w ww .j a v a 2 s . co m mrOwner = UserGroupInformation.getCurrentUser(); } supergroup = conf.get(MR_SUPERGROUP, "supergroup"); LOG.info("Starting jobtracker with owner as " + mrOwner.getShortUserName() + " and supergroup as " + supergroup); long secretKeyInterval = conf.getLong(MRConfig.DELEGATION_KEY_UPDATE_INTERVAL_KEY, MRConfig.DELEGATION_KEY_UPDATE_INTERVAL_DEFAULT); long tokenMaxLifetime = conf.getLong(MRConfig.DELEGATION_TOKEN_MAX_LIFETIME_KEY, MRConfig.DELEGATION_TOKEN_MAX_LIFETIME_DEFAULT); long tokenRenewInterval = conf.getLong(MRConfig.DELEGATION_TOKEN_RENEW_INTERVAL_KEY, MRConfig.DELEGATION_TOKEN_RENEW_INTERVAL_DEFAULT); secretManager = new DelegationTokenSecretManager(secretKeyInterval, tokenMaxLifetime, tokenRenewInterval, DELEGATION_TOKEN_GC_INTERVAL); secretManager.startThreads(); // // Grab some static constants // NUM_HEARTBEATS_IN_SECOND = conf.getInt(JT_HEARTBEATS_IN_SECOND, DEFAULT_NUM_HEARTBEATS_IN_SECOND); if (NUM_HEARTBEATS_IN_SECOND < MIN_NUM_HEARTBEATS_IN_SECOND) { NUM_HEARTBEATS_IN_SECOND = DEFAULT_NUM_HEARTBEATS_IN_SECOND; } HEARTBEATS_SCALING_FACTOR = conf.getFloat(JT_HEARTBEATS_SCALING_FACTOR, DEFAULT_HEARTBEATS_SCALING_FACTOR); if (HEARTBEATS_SCALING_FACTOR < MIN_HEARTBEATS_SCALING_FACTOR) { HEARTBEATS_SCALING_FACTOR = DEFAULT_HEARTBEATS_SCALING_FACTOR; } // whether to dump or not every heartbeat message even when DEBUG is enabled dumpHeartbeat = conf.getBoolean(JT_HEARTBEATS_DUMP, false); // 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); // Set ports, start RPC servers, setup security policy etc. InetSocketAddress addr = getAddress(conf); this.localMachine = addr.getHostName(); this.port = addr.getPort(); int handlerCount = conf.getInt(JT_IPC_HANDLER_COUNT, 10); this.interTrackerServer = RPC.getServer(SkewTuneClientProtocol.class, this, addr.getHostName(), addr.getPort(), handlerCount, false, conf, secretManager); if (LOG.isDebugEnabled()) { Properties p = System.getProperties(); for (Iterator it = p.keySet().iterator(); it.hasNext();) { String key = (String) it.next(); String val = p.getProperty(key); LOG.debug("Property '" + key + "' is " + val); } } InetSocketAddress infoSocAddr = NetUtils .createSocketAddr(conf.get(JT_HTTP_ADDRESS, String.format("%s:0", this.localMachine))); String infoBindAddress = infoSocAddr.getHostName(); int tmpInfoPort = infoSocAddr.getPort(); this.startTime = System.currentTimeMillis(); infoServer = new HttpServer("job", infoBindAddress, tmpInfoPort, tmpInfoPort == 0, conf); infoServer.setAttribute("job.tracker", this); infoServer.addServlet("jobcompletion", "/completion", JobCompletionServlet.class); infoServer.addServlet("taskspeculation", "/speculation", SpeculationEventServlet.class); infoServer.addServlet("skewreport", "/skew", SkewReportServlet.class); infoServer.addServlet("tasksplit", "/split/*", SplitTaskServlet.class); infoServer.addServlet("tasksplitV2", "/splitV2/*", SplitTaskV2Servlet.class); infoServer.start(); this.trackerIdentifier = jobtrackerIndentifier; // The rpc/web-server ports can be ephemeral ports... // ... ensure we have the correct info this.port = interTrackerServer.getListenerAddress().getPort(); this.conf.set(JT_IPC_ADDRESS, (this.localMachine + ":" + this.port)); LOG.info("JobTracker up at: " + this.port); this.infoPort = this.infoServer.getPort(); this.conf.set(JT_HTTP_ADDRESS, infoBindAddress + ":" + this.infoPort); LOG.info("JobTracker webserver: " + this.infoServer.getPort()); this.defaultNotificationUrl = String.format("http://%s:%d/completion?jobid=$jobId&status=$jobStatus", infoBindAddress, this.infoPort); LOG.info("JobTracker completion URI: " + defaultNotificationUrl); // this.defaultSpeculationEventUrl = String.format("http://%s:%d/speculation?taskid=$taskId&remainTime=$taskRemainTime",infoBindAddress,this.infoPort); this.defaultSpeculationEventUrl = String.format("http://%s:%d/speculation?jobid=$jobId", infoBindAddress, this.infoPort); LOG.info("JobTracker speculation event URI: " + defaultSpeculationEventUrl); this.defaultSkewReportUrl = String.format("http://%s:%d/skew", infoBindAddress, this.infoPort); LOG.info("JobTracker skew report event URI: " + defaultSkewReportUrl); this.trackerHttp = String.format("http://%s:%d", infoBindAddress, this.infoPort); while (!Thread.currentThread().isInterrupted()) { try { // if we haven't contacted the namenode go ahead and do it if (fs == null) { fs = mrOwner.doAs(new PrivilegedExceptionAction<FileSystem>() { @Override public FileSystem run() throws IOException { return FileSystem.get(conf); } }); } // clean up the system dir, which will only work if hdfs is out // of safe mode if (systemDir == null) { systemDir = new Path(getSystemDir()); } try { FileStatus systemDirStatus = fs.getFileStatus(systemDir); if (!systemDirStatus.getOwner().equals(mrOwner.getShortUserName())) { throw new AccessControlException( "The systemdir " + systemDir + " is not owned by " + mrOwner.getShortUserName()); } if (!systemDirStatus.getPermission().equals(SYSTEM_DIR_PERMISSION)) { LOG.warn("Incorrect permissions on " + systemDir + ". Setting it to " + SYSTEM_DIR_PERMISSION); fs.setPermission(systemDir, new FsPermission(SYSTEM_DIR_PERMISSION)); } else { break; } } catch (FileNotFoundException fnf) { } // ignore } catch (AccessControlException ace) { LOG.warn("Failed to operate on " + JTConfig.JT_SYSTEM_DIR + "(" + systemDir + ") because of permissions."); LOG.warn("Manually delete the " + JTConfig.JT_SYSTEM_DIR + "(" + systemDir + ") and then start the JobTracker."); LOG.warn("Bailing out ... "); throw ace; } catch (IOException ie) { LOG.info("problem cleaning system directory: " + systemDir, ie); } Thread.sleep(FS_ACCESS_RETRY_PERIOD); } if (Thread.currentThread().isInterrupted()) { throw new InterruptedException(); } // initialize cluster variable cluster = new Cluster(this.conf); // now create a job client proxy jtClient = (ClientProtocol) RPC.getProxy(ClientProtocol.class, ClientProtocol.versionID, JobTracker.getAddress(conf), mrOwner, this.conf, NetUtils.getSocketFactory(conf, ClientProtocol.class)); new SpeculativeScheduler().start(); // initialize task event fetcher new TaskCompletionEventFetcher().start(); // Same with 'localDir' except it's always on the local disk. asyncDiskService = new MRAsyncDiskService(FileSystem.getLocal(conf), conf.getLocalDirs()); asyncDiskService.moveAndDeleteFromEachVolume(SUBDIR); // keep at least one asynchronous worker per CPU core int numProcs = Runtime.getRuntime().availableProcessors(); LOG.info("# of available processors = " + numProcs); int maxFactor = conf.getInt(JT_MAX_ASYNC_WORKER_FACTOR, 2); asyncWorkers = new ThreadPoolExecutor(numProcs, numProcs * maxFactor, 30, TimeUnit.SECONDS, new SynchronousQueue<Runnable>(true), new ThreadPoolExecutor.CallerRunsPolicy()); speculativeSplit = conf.getBoolean(JT_SPECULATIVE_SPLIT, false); }