Examples with JobMasterState edu.iu.dsc.tws.proto.jobmaster.JobMasterAPI.JobMasterState used on opensource projects

Example 1 with JobMasterState

use of edu.iu.dsc.tws.proto.jobmaster.JobMasterAPI.JobMasterState in project twister2 by DSC-SPIDAL.

the class JobMasterStarter method main.

public static void main(String[] args) {
    // we can not initialize the logger fully yet,
    // but we need to set the format as the first thing
    LoggingHelper.setLoggingFormat(LoggingHelper.DEFAULT_FORMAT);
    // get environment variables
    String jobID = System.getenv(K8sEnvVariables.JOB_ID.name());
    String encodedNodeInfoList = System.getenv(K8sEnvVariables.ENCODED_NODE_INFO_LIST.name());
    String hostIP = System.getenv(K8sEnvVariables.HOST_IP.name());
    boolean restoreJob = Boolean.parseBoolean(System.getenv(K8sEnvVariables.RESTORE_JOB.name()));
    // load the configuration parameters from configuration directory
    String configDir = POD_MEMORY_VOLUME + File.separator + JOB_ARCHIVE_DIRECTORY;
    Config config = K8sWorkerUtils.loadConfig(configDir);
    // read job description file
    String jobDescFileName = SchedulerContext.createJobDescriptionFileName(jobID);
    jobDescFileName = POD_MEMORY_VOLUME + File.separator + JOB_ARCHIVE_DIRECTORY + File.separator + jobDescFileName;
    job = JobUtils.readJobFile(jobDescFileName);
    LOG.info("Job description file is loaded: " + jobDescFileName);
    // add any configuration from job file to the config object
    // if there are the same config parameters in both,
    // job file configurations will override
    config = JobUtils.overrideConfigs(job, config);
    config = JobUtils.updateConfigs(job, config);
    config = Config.newBuilder().putAll(config).put(CheckpointingContext.CHECKPOINTING_RESTORE_JOB, restoreJob).build();
    // init logger
    K8sWorkerUtils.initLogger(config, "jobMaster", JobMasterContext.persistentVolumeRequested(config));
    LOG.info("JobMaster is starting. Current time: " + System.currentTimeMillis());
    LOG.info("Number of configuration parameters: " + config.size());
    // get podIP from localhost
    InetAddress localHost = null;
    try {
        localHost = InetAddress.getLocalHost();
    } catch (UnknownHostException e) {
        throw new RuntimeException("Cannot get localHost.", e);
    }
    String podIP = localHost.getHostAddress();
    // construct nodeInfo for Job Master
    JobMasterAPI.NodeInfo nodeInfo = KubernetesContext.nodeLocationsFromConfig(config) ? KubernetesContext.getNodeInfo(config, hostIP) : K8sWorkerUtils.getNodeInfoFromEncodedStr(encodedNodeInfoList, hostIP);
    LOG.info("NodeInfo for JobMaster: " + nodeInfo);
    KubernetesController controller = KubernetesController.init(KubernetesContext.namespace(config));
    JobTerminator jobTerminator = new JobTerminator(config, controller);
    K8sScaler k8sScaler = new K8sScaler(config, job, controller);
    // get restart count from job ConfigMap
    // if jm is running for the first time, initialize restart count at CM
    String keyName = KubernetesUtils.createRestartJobMasterKey();
    int restartCount = K8sWorkerUtils.initRestartFromCM(controller, jobID, keyName);
    JobMasterState initialState = JobMasterState.JM_STARTED;
    if (restartCount > 0) {
        initialState = JobMasterState.JM_RESTARTED;
        // so, we terminate the job with failure
        if (!ZKContext.isZooKeeperServerUsed(config)) {
            jobTerminator.terminateJob(jobID, JobAPI.JobState.FAILED);
            return;
        }
    }
    if (ZKContext.isZooKeeperServerUsed(config)) {
        boolean zkInitialized = initializeZooKeeper(config, jobID, podIP, initialState);
        if (!zkInitialized) {
            jobTerminator.terminateJob(jobID, JobAPI.JobState.FAILED);
            return;
        }
    }
    // start JobMaster
    JobMaster jobMaster = new JobMaster(config, podIP, jobTerminator, job, nodeInfo, k8sScaler, initialState);
    // start configMap watcher to watch the kill parameter from twister2 client
    JobKillWatcher jkWatcher = new JobKillWatcher(KubernetesContext.namespace(config), jobID, controller, jobMaster);
    jkWatcher.start();
    // on any uncaught exception, we will label the job master as FAILED and
    // throw a RuntimeException
    // JVM will be restarted by K8s
    Thread.setDefaultUncaughtExceptionHandler((thread, throwable) -> {
        LOG.log(Level.SEVERE, "Uncaught exception in the thread " + thread + ". Job Master FAILED...", throwable);
        jobMaster.jmFailed();
        jkWatcher.close();
        controller.close();
        throw new RuntimeException("Worker failed with the exception", throwable);
    });
    try {
        jobMaster.startJobMasterBlocking();
    } catch (Twister2Exception e) {
        LOG.log(Level.SEVERE, e.getMessage(), e);
    }
    // close the controller
    controller.close();
}