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Date: Thu, 25 Nov 2010 16:38:26 +0800
Message-ID: <AANLkTi=Ceud9zbaCEryXhRfR3hHW-2y9KocMop+zWRBG@mail.gmail.com>
Subject: Re: Starting a Hadoop job programtically
From: Jeff Zhang <zjffdu@gmail.com>
To: mapreduce-user@hadoop.apache.org
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Please check the status of job tracker since you can not find port
9001 using netstat


2010/11/25 li ping <li.j2ee@gmail.com>:
> Hi:
> I am trying to run a job in my own application.
> So far, I can run the job on the server which the hadoop server is runnin=
g
> on.
> But what I expect is the hadoop server is running on server A. and the
> application will run on other server (B server).
> If I run the application on Server B, it will throw some error, see blow:
> 10/11/25 15:54:10 INFO ipc.Client: Retrying connect to server:
> xi-pli/xxx.xxx.xxx.xxx:9001. Already tried 0 time(s).
> 10/11/25 15:54:11 INFO ipc.Client: Retrying connect to
> server:=C2=A0xi-pli/xxx.xxx.xxx.xxx:9001. Already tried 1 time(s).
> 10/11/25 15:54:12 INFO ipc.Client: Retrying connect to
> server:=C2=A0xi-pli/xxx.xxx.xxx.xxx:9001. Already tried 2 time(s).
> ...........
> Here I replace the real ip address with the xxx.xxx.xxx.xxx.
> This is my configuration file:
> <configuration>
> =C2=A0=C2=A0 =C2=A0<property>
> =C2=A0=C2=A0 =C2=A0 =C2=A0<name>fs.default.name</name>
> =C2=A0=C2=A0 =C2=A0 =C2=A0<value>hdfs://xi-pli:9000</value>
> =C2=A0=C2=A0 =C2=A0 =C2=A0<description></description>
> =C2=A0=C2=A0 =C2=A0</property>
> <property>
> =C2=A0=C2=A0<name>mapred.job.tracker</name>
> =C2=A0=C2=A0<value>xi-pli:9001</value>
> =C2=A0=C2=A0<description></description>
> </property>
> </configuration>
> The=C2=A0configuration=C2=A0file on server side is almost the same.
> The server A and B can ping each other. and Also can ssh to each other
> without the password.
> The A,B server has the same username "hadoop"
> The iptable also has been shutdown.
> I can use the "telnet" command to connect to 9001 port on hadoop server
> (Server A). but on Server B, I can't telnet to Server A.(The hadoop serve=
r
> is running on Server A )
> If I use the netstat -a to check the port. I can't find the 9001 port.
> I have no idea why I can't run the job on the other server. If anyone can
> give me some suggestion, that's very=C2=A0appreciated.
> Thanks
> Best Regards
> --
> -----=E6=9D=8E=E5=B9=B3
> --
> -----=E6=9D=8E=E5=B9=B3
>


--=20
Best Regards

Jeff Zhang