Example usage for org.apache.spark.launcher SparkLauncher setJavaHome

Introduction

In this page you can find the example usage for org.apache.spark.launcher SparkLauncher setJavaHome.

Prototype

public SparkLauncher setJavaHome(String javaHome) 

Source Link

Document

Set a custom JAVA_HOME for launching the Spark application.

Usage

From source file:com.ebay.logstream.runner.spark.SparkPipelineRunner.java

License:Apache License

@Override
public Map<String, Object> run(Pipeline pipeline) {
    Map<String, Object> result = new HashMap<>();
    Map<String, String> env = Maps.newHashMap();
    env.put("SPARK_PRINT_LAUNCH_COMMAND", "1");
    SparkLauncher launcher = new SparkLauncher(env);
    launcher.setAppResource(pipeline.getContext().getPipelineJarPath());
    launcher.setAppName(pipeline.getContext().getPipelineName());
    launcher.setMainClass(SparkPipelineRunner.class.getCanonicalName());
    launcher.setSparkHome(pipeline.getContext().getConfig().getString(SPARK_HOME_KEY));
    launcher.setJavaHome(pipeline.getContext().getConfig().getString(JAVA_HOME));
    //set app args
    launcher.addAppArgs(pipeline.getContext().getPipeline());
    launcher.addAppArgs(pipeline.getContext().getPipelineName());
    launcher.addAppArgs(pipeline.getContext().getDeployMode().toString());
    launcher.addAppArgs(pipeline.getContext().getInputParallelism() + "");
    launcher.addAppArgs(pipeline.getContext().getFilterParallelism() + "");
    launcher.addAppArgs(pipeline.getContext().getOutputParallelism() + "");
    //work around(for get driver pid)
    String uuid = UUID.randomUUID().toString();
    launcher.addAppArgs(uuid);//from  w  w  w.  ja va  2  s .  c o m
    launcher.addAppArgs();
    launcher.setVerbose(true);
    launcher.addSparkArg("--verbose");
    if (pipeline.getContext().getDeployMode() == LogStormConstants.DeployMode.LOCAL) {
        launcher.setMaster("local[*]");
    } else {
        launcher.setMaster(pipeline.getContext().getConfig().getString(SPARK_MASTER_KEY));
    }

    try {
        SparkAppHandle handle = launcher.startApplication();
        while (handle.getAppId() == null) {
            Thread.sleep(1000);
        }
        result.put("applicationId", handle.getAppId());
        LOG.info("generate spark applicationId " + handle.getAppId());
        //get driver pid
        String cmd = "ps -ef | grep " + uuid + " | grep -v grep | awk '{print $2}'";
        LOG.info("cmd {}", cmd);
        Process process = Runtime.getRuntime().exec(new String[] { "/bin/sh", "-c", cmd });
        synchronized (process) {
            try {
                process.wait();
            } catch (Exception e) {
                LOG.warn("failed to wait driver pid: ", e);
            }
        }
        InputStream inputStream = process.getInputStream();
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
        String pid;
        while ((pid = bufferedReader.readLine()) != null) {
            result.put("driverPid", pid);
            System.out.println(pid);
        }
        bufferedReader.close();
    } catch (Exception e) {
        LOG.error("failed to start as a spark application, ", e);
    }

    return result;
}

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