我嘗試使用Java連接我的jobtracker。
下面顯示的是程序,我試圖執行Jobtracker API錯誤 - 調用本地主機/ 127.0.0.1:50030本地異常失敗:java.io.EOFException
public static void main(String args[]) throws IOException {
Configuration conf = new Configuration();
conf.addResource(new Path(
"/home/user/hadoop-1.0.3/conf/core-site.xml"));
conf.addResource(new Path(
"/home/user/hadoop-1.0.3/conf/hdfs-site.xml"));
conf.addResource(new Path(
"/home/user/hadoop-1.0.3/conf/mapred-site.xml"));
InetSocketAddress jobtracker = new InetSocketAddress("localhost", 50030);
JobClient jobClient = new JobClient(jobtracker, conf);
jobClient.setConf(conf);
JobStatus[] jobs = jobClient.jobsToComplete();
for (int i = 0; i < jobs.length; i++) {
JobStatus js = jobs[i];
if (js.getRunState() == JobStatus.RUNNING) {
JobID jobId = js.getJobID();
System.out.println(jobId);
}
}
這是例外,我得到。 即使我雖然我嘗試用127.0.0.1替換本地主機它不工作 。同樣的錯誤。
Exception in thread "main" java.io.IOException: Call to localhost/127.0.0.1:50030 failed on local exception: java.io.EOFException
at org.apache.hadoop.ipc.Client.wrapException(Client.java:1107)
at org.apache.hadoop.ipc.Client.call(Client.java:1075)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
at org.apache.hadoop.mapred.$Proxy1.getProtocolVersion(Unknown Source)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:396)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:379)
at org.apache.hadoop.mapred.JobClient.createRPCProxy(JobClient.java:480)
at org.apache.hadoop.mapred.JobClient.<init>(JobClient.java:534)
at com.tcs.nextgen.searchablemetadata.executor.factory.JobChecker.main(JobChecker.java:34)
Caused by: java.io.EOFException
at java.io.DataInputStream.readInt(DataInputStream.java:375)
at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:811)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:749)
我添加了所有相關的Hadoop的罐子。 我不明白爲什麼「/」在本地主機/ 127.0.0.1之間:50030
'localhost/127.0.0.1:50030'只是一個字符串表示,並不意味着他試圖連接到該地址。你在本地主機上運行Hadoop 1.x嗎? –
確保羣集和客戶端Hadoop版本 –