On 8/6/10 2:13 PM, Benjamin Black wrote:
Assuming the old version is already on disk in an SSTable, the new version will not overwrite it, and both versions will be in the system. A compaction will remove the old version, however.
To be clear, a compaction will only remove the old version if : a) It is a major compaction [1] b) The old version was deleted/overwritten more than GCGraceSeconds ago [2] =Rob [1] https://issues.apache.org/jira/browse/CASSANDRA-1074 [2] http://wiki.apache.org/cassandra/DistributedDeletes
