问题描述

hadoop2的Wordcount测试出错，急！！！

[hadoop@dsp16 hadoop-2.6.0]$ bin/hadoop jar /home/hadoop/hadoop-2.6.0/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.6.0.jar wordcount /input/ /output/
16/02/09 03:26:57 INFO impl.TimelineClientImpl: Timeline service address: http://dsp16:8188/ws/v1/timeline/
16/02/09 03:26:58 INFO input.FileInputFormat: Total input paths to process : 1
16/02/09 03:26:58 INFO mapreduce.JobSubmitter: number of splits:1
16/02/09 03:26:59 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1454948804760_0002
16/02/09 03:26:59 INFO impl.YarnClientImpl: Submitted application application_1454948804760_0002
16/02/09 03:26:59 INFO mapreduce.Job: The url to track the job: http://dsp16:8088/proxy/application_1454948804760_0002/
16/02/09 03:26:59 INFO mapreduce.Job: Running job: job_1454948804760_0002

yarn日志：
2016-02-08 17:36:54,055 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: dsp18/192.168.0.120:38540. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
2016-02-08 17:36:55,056 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: dsp18/192.168.0.120:38540. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
2016-02-08 17:36:55,057 INFO org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher: Error cleaning master
java.net.ConnectException: Call From dsp16/192.168.0.118 to dsp18:38540 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:791)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:731)
at org.apache.hadoop.ipc.Client.call(Client.java:1472)
at org.apache.hadoop.ipc.Client.call(Client.java:1399)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)
at com.sun.proxy.$Proxy35.stopContainers(Unknown Source)
at org.apache.hadoop.yarn.api.impl.pb.client.ContainerManagementProtocolPBClientImpl.stopContainers(ContainerManagementProtocolPBClientImpl.java:110)
at org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.cleanup(AMLauncher.java:139)
at org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.run(AMLauncher.java:268)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:530)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:494)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:607)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:705)
at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:368)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1521)
at org.apache.hadoop.ipc.Client.call(Client.java:1438)
... 9 more
2016-02-09 03:26:58,138 INFO org.apache.hadoop.yarn.server.resourcemanager.ClientRMService: Allocated new applicationId: 2

解决方案

http://linux.it.net.cn/e/cluster/hadoop/2014/1215/10427.html