Hey, this is good info. Seems like i have the same capabilities, i just
need to twist my brain a bit to see it better. Thanks for all the
feedback, much appreciated.
Joe
On Thu, Jun 6, 2013 at 11:27 AM, Alain RODRIGUEZ wrote:
> Not sure if you remember this Jonathan, but Sylvain already wrot
Not sure if you remember this Jonathan, but Sylvain already wrote a very
clear documentation about it :
http://www.datastax.com/dev/blog/thrift-to-cql3 (OCTOBER 26, 2012)
Yet a second page will give to this important topic a greater visibility.
2013/6/6 Jonathan Ellis
> This is becoming someth
Your data model should take into consideration the number of items you're
storing in a collection. If you expect it will grow over time with no
small upper bound, don't use a collection. You don't need to read before
write to answer this question, it's a decision made at modeling time
(before you
This is becoming something of a FAQ, so I wrote an more in-depth
answer:
http://www.datastax.com/dev/blog/does-cql-support-dynamic-columns-wide-rows
On Thu, Jun 6, 2013 at 8:02 AM, Joe Greenawalt wrote:
> Hi,
> I'm having some problems figuring out how to append a dynamic column on a
> column fa
The problem about "being careful about how much you store in a collection"
is that Cassandra is a blind-write system. Knowing how much data is
currently in the collection before you write is an anti-pattern, read
before write.
Cassandra Rule 1: DON'T READ BEFORE WRITE
Cassandra Rule 2: ROWS CAN HA
>
> CQL3 does now support dynamic columns. For tags or metadata values you
> could use a Collection:
>
This should probably be clarified. A collection is a super useful tool,
but it is *not* the same thing as a dynamic column. It has many
advantages, but there is one huge disadvantage in that yo
Hi,
CQL3 does now support dynamic columns. For tags or metadata values you could
use a Collection:
http://www.datastax.com/dev/blog/cql3_collections
For wide rows there's the enhanced primary keys, which I personally prefer over
the composite columns of yore:
http://www.datastax.com/dev/blog/
Dynamic columns are not supported in CQL3. We just had a discussion a day
or two ago about this where Eric Stevens explained it. Please see this:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/CQL-3-returning-duplicate-keys-td7588181.html
Regards,
Shahab
On Thu, Jun 6, 2013 at
Hi,
I'm having some problems figuring out how to append a dynamic column on a
column family using the datastax java driver 1.0 and CQL3 on Cassandra
1.2.5. Below is what i'm trying:
*cqlsh:simplex> create table user (firstname text primary key, lastname
text);
cqlsh:simplex> insert into user (fir
