Question

我是java的新手，在使用java代码运行oozie作业时遇到了一些麻烦。我无法弄清代码中的问题。一些帮助将非常感激。这是我的代码

import java.util.Properties;

import org.apache.oozie.client.OozieClient;
import org.apache.oozie.client.WorkflowJob;

public class oozie {

public static void main(String[] args) {
    OozieClient wc = new OozieClient("http://host:11000/oozie");

    Properties conf = wc.createConfiguration();

    conf.setProperty(OozieClient.APP_PATH, "hdfs://cluster/user/apps/merge-psp-logs/merge-wf/workflow.xml");
    conf.setProperty("jobTracker", "jobtracker.bigdata.com:8021");
    conf.setProperty("nameNode", "hdfs://namenode.bigdata.com:8020");
    conf.setProperty("queueName", "jobtracker.bigdata.com:8021");
    conf.setProperty("appsRoot", "hdfs://namenode.bigdata.com:8020/user/workspace/apps");
    conf.setProperty("appLibLoc", "hdfs://namenode.bigdata.com:8020/user/workspace/lib");
    conf.setProperty("rawlogsLoc", "hdfs://namenode.bigdata.com:8020/user/workspace/");
    conf.setProperty("mergedlogsLoc", "jobtracker.bigdata.com:8021");
    try {
        String jobId = wc.run(conf);
        System.out.println("Workflow job submitted");

        while (wc.getJobInfo(jobId).getStatus() == WorkflowJob.Status.RUNNING) {
            System.out.println("Workflow job running ...");
            Thread.sleep(10 * 1000);
        }
        System.out.println("Workflow job completed ...");
        System.out.println(wc.getJobInfo(jobId));
    } catch (Exception r) {
        System.out.println("Errors");
    }
}
}

虽然我可以使用命令行启动作业

Answer 1

如果没有任何进一步的信息，我会说这可能是运行时错误的原因：

conf.setProperty(OozieClient.APP_PATH, 
    "hdfs://cluster/user/apps/merge-psp-logs/merge-wf/workflow.xml");
conf.setProperty("jobTracker", "jobtracker.bigdata.com:8021");
conf.setProperty("nameNode", "hdfs://namenode.bigdata.com:8020");
conf.setProperty("queueName", "jobtracker.bigdata.com:8021");

除非你有两个集群，否则我猜你的意思是APP_PATH指向与你nameNode属性中命名的相同的HDFS实例，在这种情况下试试：

conf.setProperty(OozieClient.APP_PATH, 
    "hdfs://namenode.bigdata.com:8020/user/apps/merge-psp-logs/merge-wf/workflow.xml");

您可能还想将queueName更改为实际队列名称（可能是“default”，除非jobtracker.bigdata.com:8021是队列的实际名称）：

conf.setProperty("queueName", "default");

除了这些观察之外，请尝试发布您看到的实际运行时错误。

使用java代码运行oozie工作流程

1 个答案: