column sizes (was: online codes (?))

2010-02-03 Thread Ted Zlatanov
On Tue, 2 Feb 2010 23:05:04 -0600 Jonathan Ellis jbel...@gmail.com wrote: JE The atom in cassandra is a single column. These are almost always JE under 1KB. Is there any point to storing large objects (over 100MB) in Cassandra columns? I'm considering it but it seems like a bad idea based on

Re: column sizes (was: online codes (?))

2010-02-03 Thread Michael Pearson
I'd imagine the gossip overhead and key/column per disk limitation is too open for abuse to recommend storing lob columns with any level of predictability, particularly if frequent updates are involved. Would you say it's generally better form to store manifests or file pointers only, and send

Re: column sizes (was: online codes (?))

2010-02-03 Thread Michael Pearson
Thanks for the Gossip note, I'll keep reading up on the protocols. For key/column/disk I meant in terms of the Cassandra limitation - The main limitation on column and supercolumn size is that all data for a single key and column must fit (on disk) on a single machine in the cluster. Is it right

Re: column sizes (was: online codes (?))

2010-02-03 Thread Jonathan Ellis
That's correct. On Wed, Feb 3, 2010 at 4:49 PM, Michael Pearson mjpear...@gmail.com wrote: Thanks for the Gossip note, I'll keep reading up on the protocols. For key/column/disk I meant in terms of the Cassandra limitation - The main limitation on column and supercolumn size is that all data