Hmm, this brings the question of what uuid libraries are others using? I know this one generates type 1 UUIDs with two longs so it is 16 bytes.
http://johannburkard.de/software/uuid/ Thanks, Dean From: Marcelo Elias Del Valle <mvall...@gmail.com<mailto:mvall...@gmail.com>> Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>> Date: Monday, October 29, 2012 1:17 PM To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>> Subject: Re: ColumnFamilyInputFormat - error when column name is UUID Answering myself: it seems we can't have any non type 1 UUIDs in column names. I used the UTF8 comparator and saved my UUIDs as strings, it worked.
