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From Björn-Elmar Macek <ma...@cs.uni-kassel.de>
Subject Re: DataNode and Tasttracker communication
Date Tue, 14 Aug 2012 11:22:29 GMT
Hi James,

thank you for your reply!

i tried to, but i can only see my own processes, since i am no root user. :(
I already sent out a request to the cluster admins to sort this out for me.

Regards,
Björn


Am 14.08.2012 08:51, schrieb James Brown:
> Hi Bjorn,
>
> For the two items below, it is possible datanodes and tasktrackers are 
> already running.
>
> This command will show processes bound to the datanode port:
> netstat -putan | grep 50010
>
> tasktracker port:
> netstat -putan | grep 50060
>
> If your netstat command does not support the -p option try lsof.
>
>
>> \____Datanodes
> ...
>> The second is short kind:
>> ########################### LOG TYPE 2
>> ############################################################
>> 2012-08-13 00:59:19,038 INFO
>> org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
> ...
>> 2012-08-13 00:59:21,898 ERROR
>> org.apache.hadoop.hdfs.server.datanode.DataNode: java.net.BindException:
>> Problem binding to /0.0.0.0:50010 : Address already in use
>
> ...
>
>> \_____TastTracker
> ...
>> ########################### LOG TYPE 2
>> ############################################################
>> 2012-08-13 00:59:24,376 INFO org.apache.hadoop.mapred.TaskTracker:
>> STARTUP_MSG:
> ...
>> 2012-08-13 00:59:38,161 ERROR org.apache.hadoop.mapred.TaskTracker: Can
>> not start task tracker because java.net.BindException: Address already
>> in use
>
>
>
>
>


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