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From Edward Capriolo <edlinuxg...@gmail.com>
Subject Re: Generic questions over Cassandra 1.1/1.2
Date Wed, 28 Nov 2012 01:32:28 GMT
@Bill

Are you saying that now cassandra is less schema less ? :)

Compact storage is the schemaless of old.

On Tuesday, November 27, 2012, Bill de hÓra <bill@dehora.net> wrote:
>> I'm not sure I always
>> understand what people mean by "schema less"
>> exactly and I'm curious.
>
> For 'schema less', given this -
>
> {{{
> cqlsh> use example;
> cqlsh:example> CREATE TABLE users (
> ...  user_name varchar,
> ...  password varchar,
> ...  gender varchar,
> ...  session_token varchar,
> ...  state varchar,
> ...  birth_year bigint,
> ...  PRIMARY KEY (user_name)
> ... );
> }}}
>
> I expect this would not cause an unknown identifier error -
>
> {{{
> INSERT INTO users
> (user_name, password, extra, moar)
> VALUES
> ('bob', 'secret', 'a', 'b');
> }}}
>
> but definitions vary.
>
> Bill
>
> On 26/11/12 09:18, Sylvain Lebresne wrote:
>>
>> On Mon, Nov 26, 2012 at 8:41 AM, aaron morton <aaron@thelastpickle.com
>> <mailto:aaron@thelastpickle.com>> wrote:
>>  > > Is there any noticeable performance difference between thrift or
CQL3?
>>  > Off the top of my head it's within 5% (maybe 10%) under stress tests.
>> See Eric's talk at the Cassandra SF conference for the exact numbers.
>>
>> Eric's benchmark results was that "normal" queries were slightly slower
>> but prepared one (and in real life, I see no good reason not to prepare
>> statements) were actually slightly faster.
>>
>>  > CQL 3 requires a schema, however altering the schema is easier. And
>> in 1.2 will support concurrent schema modifications.
>>  > Thrift API is still schema less.
>>
>> Sorry to hijack this thread, but I'd be curious (like seriously, I'm not
>> trolling) to understand what you mean by "CQL 3 requires a schema" but
>> "Thrift API is still schema less". Basically I'm not sure I always
>> understand what people mean by "schema less" exactly and I'm curious.
>>
>> --
>> Sylvain
>
>

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