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From Apache Wiki <wikidi...@apache.org>
Subject [Cassandra Wiki] Trivial Update of "LiveSchemaUpdates" by JonathanEllis
Date Mon, 19 Apr 2010 15:01:30 GMT
Dear Wiki user,

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

The "LiveSchemaUpdates" page has been changed by JonathanEllis.
http://wiki.apache.org/cassandra/LiveSchemaUpdates?action=diff&rev1=6&rev2=7

--------------------------------------------------

  = Modifying Schema on a Live Cluster =
+ 
+ This page discusses features available in 0.7 (only available as svn trunk, as of this writing).
  
  == Under the Hood ==
  A new system table called `definitions` keeps track of two things: keyspace definitions
(`SCHEMA_CF`) and keyspace changes (`MIGRATIONS_CF`).  TimeUUIDs are used throughout to match
migrations up with schema and vice-versa.

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