Plans to support OR?

[Henry M]

Is there a plan for supporting OR in Cassandra queries?

The following page points out there will be future changes to add OR
support but I could not find a Jira ticket.

   - https://github.com/apache/cassandra/blob/trunk/doc/SASI.md
   *"Not Equals and OR support have been removed in this release while
   changes are made to Cassandra itself to support them."*

Thank you,
Henry

Re: Contribution

[Salih Gedik]

Chris and Pedro,

Thank you so much for the tips. I will check these out!

Regards


I would second the suggestion of going over
https://academy.datastax.com/ then can
check out http://www.datastax.com/dev/blog/deep-into-cassandra-internals

Chris

On Mon, Mar 28, 2016 at 8:04 AM, Pedro Gordo 
wrote:


Hi!

I think that the best place to start is to see the DataStax videos. They
are really useful and explain things really well. Check them here
. Although thee DS101 doesn't
contain
any deep architecture info, they tell you how Cassandra first came to be.
On DS201 they cover architecture details so I think that will be your main
focus to start.

The GettingStarted wiki 
on Planet Cassandra is also really useful and contains links to other
useful sites (including the videos on DataStax).

Best of luck with your Cassandra journey ;)

Regards

Pedro Gordo

On 28 March 2016 at 13:48, Salih Gedik  wrote:


Hey there,

I am Salih, a sophomore CS student. I really like Cassandra project and
I'd love to contribute to its development. I have read the steps to get

up

and running and looking for bugs in tracker. However I need to understand
the architecture of the system. Therefore I'd appreciate if you could

give

me some tips to run a little bit faster.

Thank you so much for your time.
Regards
--
Salih Gedik







--
Salih Gedik

Re: What is the best way to model this JSON ??

[Ryan Svihla]

Lokesh,

The modeling will change a bit depending on your queries, the rate of update 
and your tooling (Spring-data-cassandra makes a mess of updating collections 
for example).  I suggest asking the Cassandra users mailing list for help since 
this list is for development OF Cassandra.

> On Mar 28, 2016, at 11:09 AM, Lokesh Ceeba - Vendor 
>  wrote:
> 
> Hello Team,
>   How to design/develop the best data model for this ?
> 
> 
> var json=[{ "id":"9a55fdf6-eeab-4c83-9c6f-04c7df1b3225",
>"user":"ssatish",
>"event":"business",
>"occurredOn":"09 Mar 2016 17:55:15.292-0600",
>"eventObject":
>{
>"objectType":"LOAD",
>"id":"12345",
>"state":"ARRIVAL",
>"associatedAttrs":
>[
>{
>
> "type":"location_id",
>"value":"100"
>},
>{
>
> "type":"location_type",
>"value":"STORE"
>},
>{
>
> "type":"arrival_ts",
>
> "value":"2015-12-12T10:10:10"
>}
>]
> } }]
> 
> 
> I've taken this approach :
> 
> create type event_object_0328
> (
> Object_Type text,
> Object_ID   Int,
> Object_State text
> )
> ;
> 
> 
> create table Events
> (
> event_id   timeuuid,
> event_type text,
> triggered_by   text,
> triggered_ts   timestamp,
> Appl_IDtext,
> eventObjectfrozen,
> primary key(event_id)
> )
> ;
> 
> Now I need to build the Associated Attributes (Highlighted above in JSON 
> text). The Associated Attributes can be very dynamic and shall come in any 
> (Key,Value) pair combination.
> 
> 
> 
> 
> --
> Lokesh
> 
> This email and any files transmitted with it are confidential and intended 
> solely for the individual or entity to whom they are addressed. If you have 
> received this email in error destroy it immediately. *** Walmart Confidential 
> ***

What is the best way to model this JSON ??

[Lokesh Ceeba - Vendor]

Hello Team,
   How to design/develop the best data model for this ?


var json=[{ "id":"9a55fdf6-eeab-4c83-9c6f-04c7df1b3225",
"user":"ssatish",
"event":"business",
"occurredOn":"09 Mar 2016 17:55:15.292-0600",
"eventObject":
{
"objectType":"LOAD",
"id":"12345",
"state":"ARRIVAL",
"associatedAttrs":
[
{

"type":"location_id",
"value":"100"
},
{

"type":"location_type",
"value":"STORE"
},
{

"type":"arrival_ts",

"value":"2015-12-12T10:10:10"
}
]
} }]


I've taken this approach :

create type event_object_0328
(
Object_Type text,
Object_ID   Int,
Object_State text
)
;


create table Events
(
event_id   timeuuid,
event_type text,
triggered_by   text,
triggered_ts   timestamp,
Appl_IDtext,
eventObjectfrozen,
primary key(event_id)
)
;

Now I need to build the Associated Attributes (Highlighted above in JSON text). 
The Associated Attributes can be very dynamic and shall come in any (Key,Value) 
pair combination.




--
Lokesh

This email and any files transmitted with it are confidential and intended 
solely for the individual or entity to whom they are addressed. If you have 
received this email in error destroy it immediately. *** Walmart Confidential 
***

Re: Contribution

[Chris Lohfink]

I would second the suggestion of going over
https://academy.datastax.com/ then can
check out http://www.datastax.com/dev/blog/deep-into-cassandra-internals

Chris

On Mon, Mar 28, 2016 at 8:04 AM, Pedro Gordo 
wrote:

> Hi!
>
> I think that the best place to start is to see the DataStax videos. They
> are really useful and explain things really well. Check them here
> . Although thee DS101 doesn't
> contain
> any deep architecture info, they tell you how Cassandra first came to be.
> On DS201 they cover architecture details so I think that will be your main
> focus to start.
>
> The GettingStarted wiki 
> on Planet Cassandra is also really useful and contains links to other
> useful sites (including the videos on DataStax).
>
> Best of luck with your Cassandra journey ;)
>
> Regards
>
> Pedro Gordo
>
> On 28 March 2016 at 13:48, Salih Gedik  wrote:
>
> > Hey there,
> >
> > I am Salih, a sophomore CS student. I really like Cassandra project and
> > I'd love to contribute to its development. I have read the steps to get
> up
> > and running and looking for bugs in tracker. However I need to understand
> > the architecture of the system. Therefore I'd appreciate if you could
> give
> > me some tips to run a little bit faster.
> >
> > Thank you so much for your time.
> > Regards
> > --
> > Salih Gedik
> >
>

Re: Contribution

[Pedro Gordo]

Hi!

I think that the best place to start is to see the DataStax videos. They
are really useful and explain things really well. Check them here
. Although thee DS101 doesn't contain
any deep architecture info, they tell you how Cassandra first came to be.
On DS201 they cover architecture details so I think that will be your main
focus to start.

The GettingStarted wiki 
on Planet Cassandra is also really useful and contains links to other
useful sites (including the videos on DataStax).

Best of luck with your Cassandra journey ;)

Regards

Pedro Gordo

On 28 March 2016 at 13:48, Salih Gedik  wrote:

> Hey there,
>
> I am Salih, a sophomore CS student. I really like Cassandra project and
> I'd love to contribute to its development. I have read the steps to get up
> and running and looking for bugs in tracker. However I need to understand
> the architecture of the system. Therefore I'd appreciate if you could give
> me some tips to run a little bit faster.
>
> Thank you so much for your time.
> Regards
> --
> Salih Gedik
>

Contribution

[Salih Gedik]

Hey there,

I am Salih, a sophomore CS student. I really like Cassandra project and 
I'd love to contribute to its development. I have read the steps to get 
up and running and looking for bugs in tracker. However I need to 
understand the architecture of the system. Therefore I'd appreciate if 
you could give me some tips to run a little bit faster.


Thank you so much for your time.
Regards
--
Salih Gedik