cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Stu Hood <stuh...@gmail.com>
Subject Re: Columns values(integer) need frequent updates/ increments
Date Sun, 10 Apr 2011 01:04:36 GMT
If an SSTable contains an update for a row (row, not just column), we need
to read from it. See #1608 for some of the ideas that have been floated on
how to improve this situation: the core ones are 1. partitioning local data
so that the the number of files involved in a read is smaller, 2. adding
support for "superceding" data in older files so that they can be skipped.
#2316 will provide the beginning of a solution to this problem for wide
rows.


On Sat, Apr 9, 2011 at 5:52 PM, mcasandra <mohitanchlia@gmail.com> wrote:

> That I understand but 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/Columns-values-integer-need-frequent-updates-increments-tp6251464p6258033.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at
> Nabble.com.
>

Mime
View raw message