Hi,
I can answer the 2nd question.
>>> 2)I also want to view the output files(logs).
Check the following link. It contains URLs to view the logs on the Web
UI.
http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Single-Node_Cluster%29#Hadoop_Web_Interfaces
.
If that is not possible (Web UI is the preferred way, atleast for me), then
the logs would be in ${HADOOP_LOG_DIR}. The default location is
${HADOOP_HOME}/logs. The relevant logs would be in "userlogs" folder. These
2 environment variables are generally set in the file hadoop-env.sh, so, you
can check out the values there.
For the 3rd question, are you planning to change the code related to
speculative execution or do you just want to have a look at it?
Regards,
Raghava.
On Fri, Apr 9, 2010 at 6:18 AM, janani venkat <[email protected]> wrote:
> Hi,
> Am quite new to using this hadoop. I set the single node and tried running
> the sample map-reduce programs in that. They worked fine.
> 1)I want to run the distributed cache code(single node or 2-node cluster)
> and view the output. But i dont understand how to specify the input files,
> setting up the path in JobConf.java and where to add the functions
> specified in the instruction.
> 2)I also want to view the output files(logs).
> 3)They are talking about speculative execution and it is set to true by
> default in JobConf. But where exactly the actual logic of speculative
> execution could be found in the hadoop installation? I mean the specific
> code which gets executed when it is called.
>
>
> Waiting for guidance..
>
> regards
> KulliKarot
>
