sqoop client java api将mysql的数据导到hdfs

 package com.hadoop.recommend;import org.apache.sqoop.client.SqoopClient;import org.apache.sqoop.model.MDriverConfig;import org.apache.sqoop.model.MFromConfig;import org.apache.sqoop.model.MJob;import org.apache.sqoop.model.MLink;import org.apache.sqoop.model.MLinkConfig;import org.apache.sqoop.model.MSubmission;import org.apache.sqoop.model.MToConfig;import org.apache.sqoop.submission.counter.Counter;import org.apache.sqoop.submission.counter.CounterGroup;import org.apache.sqoop.submission.counter.Counters;import org.apache.sqoop.validation.Status;public class MysqlToHDFS {    public static void main(String[] args) {        sqoopTransfer();    }    public static void sqoopTransfer() {        //初始化        String url = "http://master:12000/sqoop/";        SqoopClient client = new SqoopClient(url);        //创建一个源链接 JDBC        long fromConnectorId = 2;         MLink fromLink = client.createLink(fromConnectorId);        fromLink.setName("JDBC connector");        fromLink.setCreationUser("hadoop");        MLinkConfig fromLinkConfig = fromLink.getConnectorLinkConfig();        fromLinkConfig.getStringInput("linkConfig.connectionString").setValue("jdbc:mysql://master:3306/hive");        fromLinkConfig.getStringInput("linkConfig.jdbcDriver").setValue("com.mysql.jdbc.Driver");        fromLinkConfig.getStringInput("linkConfig.username").setValue("root");        fromLinkConfig.getStringInput("linkConfig.password").setValue("");        Status fromStatus = client.saveLink(fromLink);        if(fromStatus.canProceed()) {         System.out.println("创建JDBC Link成功，ID为: " + fromLink.getPersistenceId());        } else {         System.out.println("创建JDBC Link失败");        }        //创建一个目的地链接HDFS        long toConnectorId = 1;        MLink toLink = client.createLink(toConnectorId);        toLink.setName("HDFS connector");        toLink.setCreationUser("hadoop");        MLinkConfig toLinkConfig = toLink.getConnectorLinkConfig();        toLinkConfig.getStringInput("linkConfig.uri").setValue("hdfs://master:9000/");        Status toStatus = client.saveLink(toLink);        if(toStatus.canProceed()) {         System.out.println("创建HDFS Link成功，ID为: " + toLink.getPersistenceId());        } else {         System.out.println("创建HDFS Link失败");        }        //创建一个任务        long fromLinkId = fromLink.getPersistenceId();        long toLinkId = toLink.getPersistenceId();        MJob job = client.createJob(fromLinkId, toLinkId);        job.setName("MySQL to HDFS job");        job.setCreationUser("hadoop");        //设置源链接任务配置信息        MFromConfig fromJobConfig = job.getFromJobConfig();        fromJobConfig.getStringInput("fromJobConfig.schemaName").setValue("sqoop");        fromJobConfig.getStringInput("fromJobConfig.tableName").setValue("sqoop");        fromJobConfig.getStringInput("fromJobConfig.partitionColumn").setValue("id");        MToConfig toJobConfig = job.getToJobConfig();        toJobConfig.getStringInput("toJobConfig.outputDirectory").setValue("/user/hdfs/recommend");        MDriverConfig driverConfig = job.getDriverConfig();        driverConfig.getStringInput("throttlingConfig.numExtractors").setValue("3");        Status status = client.saveJob(job);        if(status.canProceed()) {         System.out.println("JOB创建成功，ID为: "+ job.getPersistenceId());        } else {         System.out.println("JOB创建失败。");        }        //启动任务        long jobId = job.getPersistenceId();        MSubmission submission = client.startJob(jobId);        System.out.println("JOB提交状态为 : " + submission.getStatus());        while(submission.getStatus().isRunning() && submission.getProgress() != -1) {          System.out.println("进度 : " + String.format("%.2f %%", submission.getProgress() * 100));          //三秒报告一次进度          try {            Thread.sleep(3000);          } catch (InterruptedException e) {            e.printStackTrace();          }        }        System.out.println("JOB执行结束... ...");        System.out.println("Hadoop任务ID为 :" + submission.getExternalId());        Counters counters = submission.getCounters();        if(counters != null) {          System.out.println("计数器:");          for(CounterGroup group : counters) {            System.out.print("\t");            System.out.println(group.getName());            for(Counter counter : group) {              System.out.print("\t\t");              System.out.print(counter.getName());              System.out.print(": ");              System.out.println(counter.getValue());            }          }        }        if(submission.getExceptionInfo() != null) {          System.out.println("JOB执行异常，异常信息为 : " +submission.getExceptionInfo());        }        System.out.println("MySQL通过sqoop传输数据到HDFS统计执行完毕");    }}

报了这个错失咋回事？？