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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "HedWig" by mahadevkonar
Date Wed, 17 Nov 2010 22:35:27 GMT
Dear Wiki user,

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

The "HedWig" page has been changed by mahadevkonar.


  While there are a lot of commercial and open-source products in the general pub-sub category,
none of them satisfy all the above 4 requirements (they mostly fail on 3 and 4).
- == Architecture ==
+ === Architecture ===
  At the highest level, Hedwig is a collection of *regions* spread across the internet. Any
region may publish on a topic, and those messages must be delivered to any subscriber in any
region that has subscribed to that topic.

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