Hadoop 2.8.3 standalone sample ubuntu 16.04.4

最新推荐文章于 2025-09-02 22:14:44 发布

原创最新推荐文章于 2025-09-02 22:14:44 发布 · 270 阅读

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#hadoop #2.8.3 #ubuntu

本文介绍了在运行Hadoop standalone示例时遇到的主机名配置问题及解决方法。错误源于更改了主机名但未同步更新hosts文件中的映射。通过重新配置hostname与IP的映射解决了该问题。

运行Hadoop standalone sample 报一下错误：

 bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.8.3.jar grep sample/input sample/output 'dfs[a-z.]+'
18/03/28 03:41:51 INFO Configuration.deprecation: session.id is deprecated. Instead, use dfs.metrics.session-id
18/03/28 03:41:51 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=JobTracker, sessionId=
18/03/28 03:41:51 INFO metrics.MetricsUtil: Unable to obtain hostName
java.net.UnknownHostException: Test131: Test131: Name or service not known
        at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
        at org.apache.hadoop.metrics.MetricsUtil.getHostName(MetricsUtil.java:97)
        at org.apache.hadoop.metrics.MetricsUtil.createRecord(MetricsUtil.java:86)
        at org.apache.hadoop.metrics.jvm.JvmMetrics.<init>(JvmMetrics.java:90)
        at org.apache.hadoop.metrics.jvm.JvmMetrics.init(JvmMetrics.java:81)
        at org.apache.hadoop.metrics.jvm.JvmMetrics.init(JvmMetrics.java:68)
        at org.apache.hadoop.mapred.LocalJobRunnerMetrics.<init>(LocalJobRunnerMetrics.java:40)
        at org.apache.hadoop.mapred.LocalJobRunner.<init>(LocalJobRunner.java:741)
        at org.apache.hadoop.mapred.LocalJobRunner.<init>(LocalJobRunner.java:734)
        at org.apache.hadoop.mapred.LocalClientProtocolProvider.create(LocalClientProtocolProvider.java:42)
        at org.apache.hadoop.mapreduce.Cluster.initialize(Cluster.java:121)
        at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:108)
        at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:101)
        at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1311)
        at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1307)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
        at org.apache.hadoop.mapreduce.Job.connect(Job.java:1306)
        at org.apache.hadoop.mapreduce.Job.submit(Job.java:1335)
        at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1359)
        at org.apache.hadoop.examples.Grep.run(Grep.java:78)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.examples.Grep.main(Grep.java:103)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
        at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
        at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:234)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
Caused by: java.net.UnknownHostException: Test131: Name or service not known
        at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
        at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
        at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
        at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
        ... 36 more
18/03/28 03:41:51 INFO metrics.MetricsUtil: Unable to obtain hostName
java.net.UnknownHostException: Test131: Test131: Name or service not known
        at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
        at org.apache.hadoop.metrics.MetricsUtil.getHostName(MetricsUtil.java:97)
        at org.apache.hadoop.metrics.MetricsUtil.createRecord(MetricsUtil.java:86)
        at org.apache.hadoop.mapred.LocalJobRunnerMetrics.<init>(LocalJobRunnerMetrics.java:44)
        at org.apache.hadoop.mapred.LocalJobRunner.<init>(LocalJobRunner.java:741)
        at org.apache.hadoop.mapred.LocalJobRunner.<init>(LocalJobRunner.java:734)
        at org.apache.hadoop.mapred.LocalClientProtocolProvider.create(LocalClientProtocolProvider.java:42)
        at org.apache.hadoop.mapreduce.Cluster.initialize(Cluster.java:121)
        at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:108)
        at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:101)
        at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1311)
        at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1307)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
        at org.apache.hadoop.mapreduce.Job.connect(Job.java:1306)
        at org.apache.hadoop.mapreduce.Job.submit(Job.java:1335)
        at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1359)
        at org.apache.hadoop.examples.Grep.run(Grep.java:78)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.examples.Grep.main(Grep.java:103)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
        at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
        at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:234)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
Caused by: java.net.UnknownHostException: Test131: Name or service not known
        at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
        at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
        at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
        at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
        ... 33 more
java.net.UnknownHostException: Test131: Test131: Name or service not known
        at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
        at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:148)
        at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1341)
        at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1338)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
        at org.apache.hadoop.mapreduce.Job.submit(Job.java:1338)
        at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1359)
        at org.apache.hadoop.examples.Grep.run(Grep.java:78)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.examples.Grep.main(Grep.java:103)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
        at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
        at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:234)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
Caused by: java.net.UnknownHostException: Test131: Name or service not known
        at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
        at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
        at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
        at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
        ... 24 more

这个错误是由于我装完系统之后把hostname 从ubuntutest修改成了Test131。忘记修改hosts文件里面的hostname ip映射了。
解决方案就是将hostname 重新进行ip映射

sudo vi /etc/hosts
sudo /etc/init.d/networking restart

这里写图片描述