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Posted to user@cassandra.apache.org by Renato Marroquín Mogrovejo <re...@gmail.com> on 2013/01/03 19:22:28 UTC

Cassandra supported Avro data types

Hi all,

I have started playing around with Cassandra and I am not sure which
Avro data types Cassandra supports. Is there any type of documentation
or could anyone please help me on this doubt of mine?
Thanks!


Renato M.

Re: Cassandra supported Avro data types

Posted by aaron morton <aa...@thelastpickle.com>.

Collections might be what you are looking for http://www.datastax.com/dev/blog/cql3_collections

Cheers

-----------------
Aaron Morton
Freelance Cassandra Developer
New Zealand

@aaronmorton
http://www.thelastpickle.com

On 4/01/2013, at 11:35 AM, Renato Marroquín Mogrovejo <re...@gmail.com> wrote:

> Thanks Aaron!
> 
> What I am trying to map into Cassandra is an avro model like the one
> that follows:
> 
> 
> {
>  "type": "record",
>  "name": "WebPage",
>  "namespace": "org.bytegolem.webpage.generated",
>  "fields" : [
>    {"name": "url", "type": "string"},
>    {"name": "content", "type": ["null","bytes"]}]
> }
> 
> But I am not sure on how to map the {"name": "content", "type":
> ["null","bytes"]} part. Should I just use it just as a column
> accepting null values?
> This is what I've got:
> 
> keyspace ="WebPage"
> - Family "p"
>> Field name="url" qualifier="c:u"
>> Field name="content" qualifier="p:cnt:c"
> 
> Would that sound right to you? Any advice is appreciated!
> Thanks!
> 
> 
> Renato M.
> 
> 
> 2013/1/3 aaron morton <aa...@thelastpickle.com>:
>> I am not sure which
>> Avro data types Cassandra support
>> 
>> None.
>> Any mention to avro internally is from a dark time in the past.
>> 
>> Cassandra presents it's own data model, which can be used to store pretty
>> much anything. So you could serialise the avro types and store them as byte
>> streams if you wanted to.
>> 
>> Hope that helps.
>> 
>> -----------------
>> Aaron Morton
>> Freelance Cassandra Developer
>> New Zealand
>> 
>> @aaronmorton
>> http://www.thelastpickle.com
>> 
>> On 4/01/2013, at 7:22 AM, Renato Marroquín Mogrovejo
>> <re...@gmail.com> wrote:
>> 
>> Hi all,
>> 
>> I have started playing around with Cassandra and I am not sure which
>> Avro data types Cassandra supports. Is there any type of documentation
>> or could anyone please help me on this doubt of mine?
>> Thanks!
>> 
>> 
>> Renato M.
>> 
>>

Re: Cassandra supported Avro data types

Posted by Renato Marroquín Mogrovejo <re...@gmail.com>.

Thanks Aaron!

What I am trying to map into Cassandra is an avro model like the one
that follows:


{
  "type": "record",
  "name": "WebPage",
  "namespace": "org.bytegolem.webpage.generated",
  "fields" : [
    {"name": "url", "type": "string"},
    {"name": "content", "type": ["null","bytes"]}]
}

But I am not sure on how to map the {"name": "content", "type":
["null","bytes"]} part. Should I just use it just as a column
accepting null values?
This is what I've got:

keyspace ="WebPage"
- Family "p"
 > Field name="url" qualifier="c:u"
 > Field name="content" qualifier="p:cnt:c"

Would that sound right to you? Any advice is appreciated!
Thanks!


Renato M.


2013/1/3 aaron morton <aa...@thelastpickle.com>:
>  I am not sure which
> Avro data types Cassandra support
>
> None.
> Any mention to avro internally is from a dark time in the past.
>
> Cassandra presents it's own data model, which can be used to store pretty
> much anything. So you could serialise the avro types and store them as byte
> streams if you wanted to.
>
> Hope that helps.
>
> -----------------
> Aaron Morton
> Freelance Cassandra Developer
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On 4/01/2013, at 7:22 AM, Renato Marroquín Mogrovejo
> <re...@gmail.com> wrote:
>
> Hi all,
>
> I have started playing around with Cassandra and I am not sure which
> Avro data types Cassandra supports. Is there any type of documentation
> or could anyone please help me on this doubt of mine?
> Thanks!
>
>
> Renato M.
>
>

Re: Cassandra supported Avro data types

Posted by aaron morton <aa...@thelastpickle.com>.

>  I am not sure which
> Avro data types Cassandra support
None. 
Any mention to avro internally is from a dark time in the past. 

Cassandra presents it's own data model, which can be used to store pretty much anything. So you could serialise the avro types and store them as byte streams if you wanted to. 

Hope that helps. 

-----------------
Aaron Morton
Freelance Cassandra Developer
New Zealand

@aaronmorton
http://www.thelastpickle.com

On 4/01/2013, at 7:22 AM, Renato Marroquín Mogrovejo <re...@gmail.com> wrote:

> Hi all,
> 
> I have started playing around with Cassandra and I am not sure which
> Avro data types Cassandra supports. Is there any type of documentation
> or could anyone please help me on this doubt of mine?
> Thanks!
> 
> 
> Renato M.