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From "Khalil Honsali" <k.hons...@gmail.com>
Subject Re: some questions about hadoop
Date Wed, 12 Dec 2007 02:08:05 GMT
As far as my basic understanding goes:
1 - 3rd party - or so technologies are located in the folder hadoop-xx/lib ,
for example apache's commons-logging technologie ...
4 -  ... which is used by hadoop for logging into the log files specified in
the configuration files. log files are usually in the hadoop-xx/logs/
directory and there are two types of logging: INFO (information messages)
and ERROR. you can tune logging schemes via hadoop-xx/conf/commons-
logging.properties or hadoop-xx/conf/log4j.properties

On 12/12/2007, 王学超 <wangxc100@gmail.com> wrote:
>
> hi, everyone!
> I'm new,I am not familiar with hadoop,so I have some following
> questions,please help me. thanks
> 1、Are there 3rd party technologies and included in hadoop or dependencies?
> 2、How is hadoop's high-availability handled? Built-in or requires
> separate HA manager?
> 3、How is security handled?
> 4、How is error logging handled?
>



-- 
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شهر مبارك كريم
كل عام و أنتم بخير
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Honsali Khalil − 本査理 カリル
Academic>Japan>NIT>Grad. Sc. Eng.>Dept. CS>Matsuo&Tsumura Lab.
http://www.matlab.nitech.ac.jp/~k-hon/<http://www.matlab.nitech.ac.jp/%7Ek-hon/>
+81 (zero-)eight-zero 5134 8119
k.honsali@ezweb.ne.jp (instant reply mail)
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