For anyone interested, I came across this video where Sylvain explains how
counters are actually implemented in Cassandra.
http://vimeo.com/26011102
On Feb 6, 2013, at 8:08 PM, aaron morton wrote:
>> Thanks Aaron, so will there only be one "value" for each counter column per
>> sstable just
> Thanks Aaron, so will there only be one "value" for each counter column per
> sstable just like regular columns?
Yes.
> For some reason I was under the impression that Cassandra keeps a log of all
> the increments not the actual value.
Not as far as I understand.
Cheers
-
Thanks Aaron, so will there only be one "value" for each counter column per
sstable just like regular columns? For some reason I was under the impression
that Cassandra keeps a log of all the increments not the actual value.
On Feb 5, 2013, at 12:36 PM, aaron morton wrote:
>> Are there any sp
> Are there any specific operational considerations one should make when using
> counter columns families?
Performance, as they incur a read and a write.
There were some issues with overcounts in log replay (see the changes.txt).
> How are counter column families stored on disk?
Same as regu
Hey Guys,
Are there any specific operational considerations one should make when using
counter columns families? How are counter column families stored on disk? How
do they effect compaction?
-- Drew
