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From Apache Wiki <>
Subject [Cassandra Wiki] Update of "LiveSchemaUpdates" by StepanKoltsov
Date Sat, 16 Apr 2011 15:21:44 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 StepanKoltsov.


  = Modifying Schema on a Live Cluster =
- This page discusses features available in 0.7 (only available as svn trunk, as of this writing).
+ This page discusses features available in 0.7.
  == 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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