Re: Columns values(integer) need frequent updates/ increments

2011-04-10 Thread Stu Hood
Sun, Apr 10, 2011 at 5:15 PM, mcasandra wrote: > What's the difference between a row index and sstable index? > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Columns-values-integer-need-frequent-updates-increments-tp

Re: Columns values(integer) need frequent updates/ increments

2011-04-10 Thread mcasandra
What's the difference between a row index and sstable index? -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Columns-values-integer-need-frequent-updates-increments-tp6251464p6259882.html Sent from the cassandra-u...@incubator.apache.org ma

Re: Columns values(integer) need frequent updates/ increments

2011-04-10 Thread Javier Canillas
my basic quesiton was how does it know that there are > multiple updates that have occurred on the same column? and how does it > efficiently knows which sstable have these updates? > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/C

Re: Columns values(integer) need frequent updates/ increments

2011-04-09 Thread Stu Hood
gt;>> >>> -- >>> View this message in context: >>> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Columns-values-integer-need-frequent-updates-increments-tp6251464p6258033.html >>> Sent from the cassandra-u...@incubator.apache.org mailing list archive >>> at Nabble.com. >>> >> >> >

Re: Columns values(integer) need frequent updates/ increments

2011-04-09 Thread Stu Hood
ows which sstable have these updates? >> >> -- >> View this message in context: >> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Columns-values-integer-need-frequent-updates-increments-tp6251464p6258033.html >> Sent from the cassandra-u...@incubator.apache.org mailing list archive at >> Nabble.com. >> > >

Re: Columns values(integer) need frequent updates/ increments

2011-04-09 Thread Stu Hood
re > multiple updates that have occurred on the same column? and how does it > efficiently knows which sstable have these updates? > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Columns-values-integer-need-frequent-updates-in

Re: Columns values(integer) need frequent updates/ increments

2011-04-09 Thread mcasandra
.nabble.com/Columns-values-integer-need-frequent-updates-increments-tp6251464p6258033.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.

Re: Columns values(integer) need frequent updates/ increments

2011-04-09 Thread Javier Canillas
recent > value. > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Columns-values-integer-need-frequent-updates-increments-tp6251464p6257960.html > Sent from the cassandra-u...@incubator.apache.org mailing list archive at > Nabble.com.

Re: Columns values(integer) need frequent updates/ increments

2011-04-09 Thread mcasandra
If there are multiple updates to same columns and scattered accross multiple sstables then how does cassandra know which sstable has the most recent value. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Columns-values-integer-need-frequent

Re: Columns values(integer) need frequent updates/ increments

2011-04-08 Thread aaron morton
A lot depends on your definition of frequently. Also when a column is updated in the memtable the previous column is replaced, so when the memtable is flushed to disk as an SSTable only one copy of the column is stored. If you have a situation where a lot of columns are overwritten setting a h

Columns values(integer) need frequent updates/ increments

2011-04-07 Thread Ertio Lew
Hi, I am working on a Question/Answers web app using Cassandra(consider very similar to StackOverflow sites). I need to built the reputation system for users on the application. This way the user's reputation increases when s/he answers correctly somebody's question. Thus if I keep the reputation