hadoop-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Harit Himanshu <harit.subscripti...@gmail.com>
Subject Re: Problem running PI example in Hadoop 2.0.0
Date Wed, 08 Aug 2012 21:47:27 GMT
- when adding slaves are you adding slaves in conf/slaves file? (I assume yes)
- are these slaves mapped in your /etc/hosts file?
- in your slaves con/masters do you have entry for master host?
- in your slaves /etc/hosts does master resolves to the correct IP?


On Aug 8, 2012, at 2:39 PM, Arjun Reddy wrote:

> I am trying to setup a small cluster using hadoop 2.0.0 and using PI example to validate
the setup.  When I have 1 master and 1 slave the example works fine.  I am getting exceptions
with the PI example when additional slave nodes are added to the cluster.  The syslogs for
failed  tasks are as follows.  Any ideas why this is happening.
> 
> 2012-08-08 15:41:19,914 WARN [main] org.apache.hadoop.conf.Configuration: job.xml:an
attempt to override final parameter: mapreduce.job.end-notification.max.retry.interval;  Ignoring.
> 2012-08-08 15:41:19,915 WARN [main] org.apache.hadoop.conf.Configuration: job.xml:an
attempt to override final parameter: mapreduce.job.end-notification.max.attempts;  Ignoring.
> 2012-08-08 15:41:19,973 WARN [main] org.apache.hadoop.security.authentication.util.KerberosName:
Kerberos krb5 configuration not found, setting default realm to empty
> 2012-08-08 15:41:20,142 INFO [main] org.apache.hadoop.metrics2.impl.MetricsConfig: loaded
properties from hadoop-metrics2.properties
> 2012-08-08 15:41:20,221 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl:
Scheduled snapshot period at 10 second(s).
> 2012-08-08 15:41:20,221 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl:
MapTask metrics system started
> 2012-08-08 15:41:20,377 WARN [main] org.apache.hadoop.conf.Configuration: job.xml:an
attempt to override final parameter: dfs.namenode.name.dir;  Ignoring.
> 2012-08-08 15:41:20,378 WARN [main] org.apache.hadoop.conf.Configuration: job.xml:an
attempt to override final parameter: mapreduce.job.end-notification.max.retry.interval;  Ignoring.
> 2012-08-08 15:41:20,378 WARN [main] org.apache.hadoop.conf.Configuration: job.xml:an
attempt to override final parameter: dfs.datanode.data.dir;  Ignoring.
> 2012-08-08 15:41:20,378 WARN [main] org.apache.hadoop.conf.Configuration: job.xml:an
attempt to override final parameter: mapreduce.job.end-notification.max.attempts;  Ignoring.
> 2012-08-08 15:41:20,435 INFO [main] org.apache.hadoop.mapred.YarnChild: Sleeping for
0ms before retrying again. Got null now.
> 2012-08-08 15:41:21,483 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 0 time(s).
> 2012-08-08 15:41:22,484 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 1 time(s).
> 2012-08-08 15:41:23,484 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 2 time(s).
> 2012-08-08 15:41:24,485 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 3 time(s).
> 2012-08-08 15:41:25,486 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 4 time(s).
> 2012-08-08 15:41:26,486 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 5 time(s).
> 2012-08-08 15:41:27,487 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 6 time(s).
> 2012-08-08 15:41:28,488 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 7 time(s).
> 2012-08-08 15:41:29,488 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 8 time(s).
> 2012-08-08 15:41:30,489 INFO [main] org.apache.hadoop.ipc.Client: Retrying connect to
server: node2/127.0.1.1:45965. Already tried 9 time(s).
> 2012-08-08 15:41:30,492 WARN [main] org.apache.hadoop.mapred.YarnChild: Exception running
child : java.net.ConnectException: Call From node2/127.0.1.1 to node2:45965 failed on connection
exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
>         at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:727)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1165)
>         at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:224)
>         at $Proxy6.getTask(Unknown Source)
>         at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:123)
> Caused by: java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:701)
>         at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
>         at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:524)
>         at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:489)
>         at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:472)
>         at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:566)
>         at org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:215)
>         at org.apache.hadoop.ipc.Client.getConnection(Client.java:1271)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1141)
>         ... 3 more
> 
> 2012-08-08 15:41:30,493 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl:
Stopping MapTask metrics system...
> 2012-08-08 15:41:30,494 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl:
MapTask metrics system stopped.
> 2012-08-08 15:41:30,494 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl:
MapTask metrics system shutdown complete.
>  


Mime
View raw message