Re: quick question about super columns

Not that I'm aware of. There are several other decent alternatives to large amounts of subcolumns in a supercolumn, so I don't think it's a high priority. - Tyler On Fri, Jan 7, 2011 at 9:59 PM, Rajkumar Gupta wrote: > Hey Tyler, > > Is this limitation of supercolumns going to be removed anytim

Re: Is this a good schema design to implement a social application..

In the twissandra example, http://www.riptano.com/docs/0.6/data_model/twissandra#adding-friends , I find that they have split the materialized view of a user's homepage (like his followers list, tweets from friends) into several columnfamilies instead of putting in supercolumns inside a single Supe

Re: quick question about super columns

Hey Tyler, Is this limitation of supercolumns going to be removed anytime sooner ? Raj On Fri, Jan 7, 2011 at 8:51 PM, Tyler Hobbs wrote: > An important bit to read about supercolumn limitations: > http://www.riptano.com/docs/0.6/data_model/supercolumns#limitations > > Don't make supercolumns w

Bootstrapping problem

I have a Cassandra cluster (release 0.7.0-rc4) of two nodes, and am trying to add a third node. This cluster has a non-standard setting of 7001 for storage_port. With auto_bootstrap=false, this node can join the cluster fine. However when I'm setting auto_bootstrap to true, I see the follow

Making TTL logic a pluggable strategy

Hi! Idea: instead of simply deleting data when it TTL has passed why not make the logic that's supposed to be executed at that point in time a pluggable strategy. I could think e.g. of a strategy that moves old data to an archive DB. -tcn

Making TTL logic a pluggable strategy

Hi! Idea: instead of simply deleting data when it TTL has passed why not make the logic that's supposed to be executed at that point in time a pluggable strategy. I could think e.g. of a strategy that moves old data to an archive DB. -tcn

Re: Is this a good schema design to implement a social application..

The fact that subcolumns inside the supercolumns aren't indexed currently may suck here, whenever a small no (10-20 ) of subcolumns need to be retreived from a large list of subcolumns of a supercolumn like MyPostsIdKeysList. On Fri, Jan 7, 2011 at 9:58 PM, Raj wrote: > My question is in context

Is this a good schema design to implement a social application..

My question is in context of a social network schema design I am thinking of following schema for storing a user's data that is required as he logs in & is led to his homepage:- (I aimed at a schema design such that through a single row read query all the data that would be required to put up the

Re: quick question about super columns

An important bit to read about supercolumn limitations: http://www.riptano.com/docs/0.6/data_model/supercolumns#limitations Don't make supercolumns with a huge number of subcolumns (or a few really large subcolumns) unless you plan to always read all of them at once. - Tyler On Fri, Jan 7, 2011

Re: TimeUUID question

The thread here may help: http://www.mail-archive.com/user@cassandra.apache.org/msg08393.html On Fri, Jan 7, 2011 at 6:27 PM, Arijit Mukherjee wrote: > Hi > > I'm using the piece of code given in the FAQ > (http://wiki.apache.org/cassandra/FAQ#working_with_timeuuid_in_java) > to convert a Date t

TimeUUID question

Hi I'm using the piece of code given in the FAQ (http://wiki.apache.org/cassandra/FAQ#working_with_timeuuid_in_java) to convert a Date to UUID, and then trying to convert it back (using the example code given in Hector TimeUUIDUtils - convert the UUID to long (getTimeFromUUID) and then convert it

Question re: the use of multiple ColumnFamilies

Hi, I have a performance problem related to my use of multiple ColumnFamilies. Maybe there's a better way to represent my data such that I don't hit this problem, I don't know, but as things stand, I'm putting data into each ColumnFamily at a rate which is more-or-less the same for each. This mea