mysqlsqoophdfshadoop
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？？
