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Posted to common-user@hadoop.apache.org by Massimo Schiavon <ms...@volunia.com> on 2010/10/18 15:59:07 UTC

Custom logging settings for task execution

I want to set the hadoop.root.logger variable for task executions but 
seems that this setting is hardcoded at line 352 of TaskRunner.java

[...]

vargs.add("-Dhadoop.root.logger=INFO,TLA");

[...]

there is a way to add a custom appender?

I need to do this because I want to pipe the log stream to syslog ant 
then to Flume

Thanks
Massimo

Re: Custom logging settings for task execution

Posted by Massimo Schiavon <ms...@volunia.com>.

On 22/11/2010 23:52, sonal wrote:
> hi Massimo,
>
> Massimo Schiavon<ms...@...>  writes:
>
>> I want to set the hadoop.root.logger variable for task executions but
>> seems that this setting is hardcoded at line 352 of TaskRunner.java
>>
>> [...]
>>
>> vargs.add("-Dhadoop.root.logger=INFO,TLA");
>>
>> [...]
>>
>> there is a way to add a custom appender?
>>
>> I need to do this because I want to pipe the log stream to syslog ant
>> then to Flume
>>
>
>   did you figure out a way to do this? i've been trying to find a solution to the
> same problem,
>
> thanks!
> sonal
>
>
>

The only way I found is changing the source code and rebuild. Maybe 
adding a variable to the Configuration object with a default value of 
"INFO,TLA".
The line could be something like:

vargs.add("-Dhadoop.root.logger=" + 
conf.get("hadoop.tasktracker.root.logger", "INFO,TLA"));

bye
Massimo

PS
I haven't tested this solution so I'm not sure it works

Re: Custom logging settings for task execution

Posted by sonal <so...@themandelbrotproject.com>.

hi Massimo, 

Massimo Schiavon <ms...@...> writes:

> 
> I want to set the hadoop.root.logger variable for task executions but 
> seems that this setting is hardcoded at line 352 of TaskRunner.java
> 
> [...]
> 
> vargs.add("-Dhadoop.root.logger=INFO,TLA");
> 
> [...]
> 
> there is a way to add a custom appender?
> 
> I need to do this because I want to pipe the log stream to syslog ant 
> then to Flume
> 


 did you figure out a way to do this? i've been trying to find a solution to the
same problem, 

thanks!
sonal