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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "ZooKeeper" by PatrickHunt
Date Wed, 23 Jul 2008 22:04:21 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The following page has been changed by PatrickHunt:
http://wiki.apache.org/hadoop/ZooKeeper

------------------------------------------------------------------------------
  
  == General Information ==
  ZooKeeper: Because coordinating distributed systems is a Zoo
+ 
+ also see: [:ZooKeeper/Tao: The Tao of ZooKeeper]
  
  ZooKeeper is a centralized service for maintaining configuration information, naming, providing
distributed synchronization, and providing group services. All of these kinds of services
are used in some form or another by distributed applications. Each time they are implemented
there is a lot of work that goes into fixing the bugs and race conditions that are inevitable.
Because of the difficulty of implementing these kinds of services, applications initially
usually skimp on them ,which make them brittle in the presence of change and difficult to
manage. Even when done correctly, different implementations of these services lead to management
complexity when the applications are deployed.
  

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