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From jbel...@apache.org
Subject svn commit: r1198128 - /cassandra/branches/cassandra-1.0/NEWS.txt
Date Sun, 06 Nov 2011 04:11:09 GMT
Author: jbellis
Date: Sun Nov  6 04:11:08 2011
New Revision: 1198128

URL: http://svn.apache.org/viewvc?rev=1198128&view=rev
Log:
added "always snapshot when upgrading" advice

Modified:
    cassandra/branches/cassandra-1.0/NEWS.txt

Modified: cassandra/branches/cassandra-1.0/NEWS.txt
URL: http://svn.apache.org/viewvc/cassandra/branches/cassandra-1.0/NEWS.txt?rev=1198128&r1=1198127&r2=1198128&view=diff
==============================================================================
--- cassandra/branches/cassandra-1.0/NEWS.txt (original)
+++ cassandra/branches/cassandra-1.0/NEWS.txt Sun Nov  6 04:11:08 2011
@@ -1,3 +1,15 @@
+GENERAL UPGRADING ADVICE FOR ANY VERSION
+========================================
+
+Snapshotting is fast (especially if you have JNA installed) and takes
+effectively zero disk space until you start compacting the live data
+files again.  Thus, best practice is to ALWAYS snapshot before any
+upgrade, just in case you need to roll back to the previous version.
+(Cassandra version X + 1 will always be able to read data files created
+by version X, but the inverse is not necessarily the case.)
+
+
+
 1.0.2
 =====
 



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