Hi everybody. This is a heads-up for 3rd-party client developers. I should have sent this out when the feature first went in, but it wasn't on my mind. My apologies.
Shortly after CASSANDRA-44 (create KS/CF on a live cluster) was committed, we had a request to provide a way to update those settings (CASSANDRA-1285). That feature was committed to trunk on 3 Sept and will be part of 0.7-beta2 when it is released. As you would expect, there are settings you cannot and should not modify. Here are the settings you *can* modify. For the most part, if you try to update a field not included here, an exception will be thrown: CfDef: comment row_cache_size preload_row_cache key_cache_size read_repair_chance gc_grace_seconds default_validation_class column_metadata (we'll allow this one to be modified if/when CASSANDRA-1415 goes in) KsDef: strategy_class strategy_options, replication_factor * make sure you do not include any CF definitions, or an error is thrown. * These are exposed on the server as system_update_keyspace and system_update_column_family. Please note: any housekeeping required by modifying one of these fields must be manually performed on the cluster via nodetool (e.g.: repair or cleanup). Cheers, Gary.
