所以我在三个节点AWS EC2实例的集群上安装了ambari。所有服务都显示为绿色,即它们似乎都运行正常。我可以做所有HDFS文件操作。但是,每当我尝试在实例上运行一个简单的wordcount程序时,它就说它无法到达8020端口。
$ hadoop jar /usr/hdp/2.2.6.3-1/hadoop-mapreduce/hadoop-mapreduce-examples-2.6.0.2.2.6.3-1.jar wordcount /tmp/wordcount/in /tmp/wordcount/out
15/08/21 05:28:02 INFO impl.TimelineClientImpl: Timeline service address: http://<fqdn for the namenode>:8188/ws/v1/timeline/
15/08/21 05:28:02 INFO client.RMProxy: Connecting to ResourceManager at <fqdn for the namenode>/10.0.0.55:8050
java.io.FileNotFoundException: File does not exist: hdfs://<fqdn for the namenode>:8020/hdp/apps/2.2.6.3-1/mapreduce/mapreduce.tar.gz
at org.apache.hadoop.fs.Hdfs.getFileStatus(Hdfs.java:137)
at org.apache.hadoop.fs.AbstractFileSystem.resolvePath(AbstractFileSystem.java:460)
at org.apache.hadoop.fs.FileContext$25.next(FileContext.java:2180)
at org.apache.hadoop.fs.FileContext$25.next(FileContext.java:2176)
at org.apache.hadoop.fs.FSLinkResolver.resolve(FSLinkResolver.java:90)
at org.apache.hadoop.fs.FileContext.resolve(FileContext.java:2176)
at org.apache.hadoop.fs.FileContext.resolvePath(FileContext.java:595)
at org.apache.hadoop.mapreduce.JobSubmitter.addMRFrameworkToDistributedCache(JobSubmitter.java:753)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:435)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1296)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1293)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1293)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1314)
at org.apache.hadoop.examples.WordCount.main(WordCount.java:87)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.ProgramDriver$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:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
FQDN是创建群集时使用的命令hostname -f
的输出。
我也尝试过telnet,但是连接也被拒绝了。
bt-prod-dev-02@ip-10-0-0-55:~$ telnet localhost 8020
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused
我不确定在哪里看。
答案 0 :(得分:0)
这是一个简单的“FileNotFoundException”,我曾预计ambari安装需要注意。因此,一旦我将文件printf
放入CK
。