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Posted to common-dev@hadoop.apache.org by 王学超 <wa...@gmail.com> on 2007/12/11 10:31:33 UTC

hi,I want to ask some questions.

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?