Azkaban的任务类型分析35：JavaProcessJob的执行

我们知道，在azkaban内部有好几种调度程序，那么一个java程序怎么被执行的呢？================================================================其实更完整的是下面我们来探索JavaProcessJob类型job的执行过程！jdb azkaban.execapp.AzkabanExecutorServer

-conf  /root/azkb/azkaban_3.

0

.0_debug/conf

stop in azkaban.jobExecutor.JavaProcessJob.HelloWorld

run

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private void loadDefaultTypes(JobTypePluginSet plugins) throws JobTypeManagerException {logger.info("Loading plugin default job types");plugins.addPluginClass("command", ProcessJob.class);plugins.addPluginClass("javaprocess", JavaProcessJob.class);plugins.addPluginClass("noop", NoopJob.class);plugins.addPluginClass("python", PythonJob.class);plugins.addPluginClass("ruby", RubyJob.class);plugins.addPluginClass("script", ScriptJob.class);}

=========================================================================================================关于classPath的路径protected List<String> getClassPaths() {//List<String> classPaths = getJobProps().getStringList(CLASSPATH, null, ",");ArrayList<String> classpathList = new ArrayList<String>();// Adding global properties used system wide.//if (getJobProps().containsKey(GLOBAL_CLASSPATH)) {List<String> globalClasspath = getJobProps().getStringList(GLOBAL_CLASSPATH);for (String global : globalClasspath) {getLog().info("Adding to global classpath:" + global);classpathList.add(global);}}//if (classPaths == null) {File path = new File(getPath());// File parent = path.getParentFile();getLog().info("No classpath specified. Trying to load classes from " + path);if (path != null) {for (File file : path.listFiles()) {if (file.getName().endsWith(".jar")) {// log.info("Adding to classpath:" + file.getName());classpathList.add(file.getName());}}}} else {classpathList.addAll(classPaths);}return classpathList;}一个可用的是commands = "[java -Dazkaban.flowid=javaprocess -Dazkaban.execid=193 -Dazkaban.jobid=javaprocess -Xms64M -Xmx256M -cp javaProcessTest.jar javaProcessTest.test]"