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Erro running pi programm

What mode are you running your hadoop in: Local/Pseud/Fully...?

Your hostname is not recognised

Your configuration setting seems to be wrong.

Hi, all

Could some help looking at this problem? I am setting up a four node cluster on EC2 and seems that the cluster is set up fine until I start testing.

I have tried password-less ssh from each node to all the nodes and there is no problem connecting. Any advice will be greatly appreciated!

[hduser@ip-XX-XX-XXX-XXX hadoop]$ bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-0.23.4.jar pi -Dmapreduce.clientfactory.class.name<http://Dmapreduce.clientfactory.class.name>=org.apache.hadoop.mapred.YarnClientFactory -libjars share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-0.23.4.jar 16 10000
Number of Maps  = 16
Samples per Map = 10000
Wrote input for Map #0
Wrote input for Map #1
Wrote input for Map #2
Wrote input for Map #3
Wrote input for Map #4
Wrote input for Map #5
Wrote input for Map #6
Wrote input for Map #7
Wrote input for Map #8
Wrote input for Map #9
Wrote input for Map #10
Wrote input for Map #11
Wrote input for Map #12
Wrote input for Map #13
Wrote input for Map #14
Wrote input for Map #15
Starting Job
12/11/09 12:02:59 INFO input.FileInputFormat: Total input paths to process : 16
12/11/09 12:02:59 INFO mapreduce.JobSubmitter: number of splits:16
12/11/09 12:02:59 WARN conf.Configuration: mapred.job.classpath.files is deprecated. Instead, use mapreduce.job.classpath.files
12/11/09 12:02:59 WARN conf.Configuration: mapred.jar is deprecated. Instead, use mapreduce.job.jar
12/11/09 12:02:59 WARN conf.Configuration: mapred.cache.files is deprecated. Instead, use mapreduce.job.cache.files
12/11/09 12:02:59 WARN conf.Configuration: mapred.map.tasks.speculative.execution is deprecated. Instead, use mapreduce.map.speculative
12/11/09 12:02:59 WARN conf.Configuration: mapred.reduce.tasks is deprecated. Instead, use mapreduce.job.reduces
12/11/09 12:02:59 WARN conf.Configuration: mapred.output.value.class is deprecated. Instead, use mapreduce.job.output.value.class
12/11/09 12:02:59 WARN conf.Configuration: mapred.reduce.tasks.speculative.execution is deprecated. Instead, use mapreduce.reduce.speculative
12/11/09 12:02:59 WARN conf.Configuration: mapred.used.genericoptionsparser is deprecated. Instead, use mapreduce.client.genericoptionsparser.used
12/11/09 12:02:59 WARN conf.Configuration: mapreduce.map.class is deprecated. Instead, use mapreduce.job.map.class
12/11/09 12:02:59 WARN conf.Configuration: mapred.job.name<http://mapred.job.name> is deprecated. Instead, use mapreduce.job.name<http://mapreduce.job.name>
12/11/09 12:02:59 WARN conf.Configuration: mapreduce.reduce.class is deprecated. Instead, use mapreduce.job.reduce.class
12/11/09 12:02:59 WARN conf.Configuration: mapreduce.inputformat.class is deprecated. Instead, use mapreduce.job.inputformat.class
12/11/09 12:02:59 WARN conf.Configuration: mapred.input.dir is deprecated. Instead, use mapreduce.input.fileinputformat.inputdir
12/11/09 12:02:59 WARN conf.Configuration: mapred.output.dir is deprecated. Instead, use mapreduce.output.fileoutputformat.outputdir
12/11/09 12:02:59 WARN conf.Configuration: mapreduce.outputformat.class is deprecated. Instead, use mapreduce.job.outputformat.class
12/11/09 12:02:59 WARN conf.Configuration: mapred.map.tasks is deprecated. Instead, use mapreduce.job.maps
12/11/09 12:02:59 WARN conf.Configuration: mapred.cache.files.timestamps is deprecated. Instead, use mapreduce.job.cache.files.timestamps
12/11/09 12:02:59 WARN conf.Configuration: mapred.output.key.class is deprecated. Instead, use mapreduce.job.output.key.class
12/11/09 12:02:59 WARN conf.Configuration: mapred.working.dir is deprecated. Instead, use mapreduce.job.working.dir
12/11/09 12:03:00 INFO mapred.ResourceMgrDelegate: Submitted application application_1352478937343_0002 to ResourceManager at master/<>
12/11/09 12:03:00 INFO mapreduce.Job: The url to track the job: http://master:8088/proxy/application_1352478937343_0002/
12/11/09 12:03:00 INFO mapreduce.Job: Running job: job_1352478937343_0002
12/11/09 12:03:01 INFO mapreduce.Job: Job job_1352478937343_0002 running in uber mode : false
12/11/09 12:03:01 INFO mapreduce.Job:  map 0% reduce 0%
12/11/09 12:03:01 INFO mapreduce.Job: Job job_1352478937343_0002 failed with state FAILED due to: Application application_1352478937343_0002 failed 1 times due to Error launching appattempt_1352478937343_0002_000001. Got exception: java.lang.reflect.UndeclaredThrowableException
        at org.apache.hadoop.yarn.api.impl.pb.client.ContainerManagerPBClientImpl.startContainer(ContainerManagerPBClientImpl.java:111)
        at org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.launch(AMLauncher.java:115)
        at org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.run(AMLauncher.java:258)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:722)
Caused by: com.google.protobuf.ServiceException: java.net.UnknownHostException: Yinghua java.net.UnknownHostException; For more details see:  http://wiki.apache.org/hadoop/UnknownHost
        at org.apache.hadoop.yarn.ipc.ProtoOverHadoopRpcEngine$Invoker.invoke(ProtoOverHadoopRpcEngine.java:144)
        at $Proxy24.startContainer(Unknown Source)
        at org.apache.hadoop.yarn.api.impl.pb.client.ContainerManagerPBClientImpl.startContainer(ContainerManagerPBClientImpl.java:104)
        ... 5 more
Caused by: java.net.UnknownHostException: Yinghua For more details see:  http://wiki.apache.org/hadoop/UnknownHost
        at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:713)
        at org.apache.hadoop.ipc.Client$Connection.<init>(Client.java:236)
        at org.apache.hadoop.ipc.Client.getConnection(Client.java:1188)
yinghua hu 2012-11-09, 17:51
yinghua hu 2012-11-09, 18:20
Kartashov, Andy 2012-11-09, 19:31
Ted Reynolds 2012-11-09, 20:43
yinghua hu 2012-11-10, 00:10