> There are many more such CFs all with prefixes of "grpId". By hashing grpId
> to cassandra's token, I thought we can co-locate all the group's data into
> one set of replicated nodes.
>
> Is there a way to achieve this?
No.
Rows with the same row key are stored on the same nodes. Rows with d
I think I have simplified my example a little too much.
Lets assume that there are groups and users.
Ideally a grpId becomes the key and it holds some meta-data.
Lets say GroupMetaCF
grpId --> key, entityId --> col-name, blobdata --> col-value
Now we have a UserTimeSeriesCF
grpId/userId --> k
rg<mailto:user@cassandra.apache.org>"
mailto:user@cassandra.apache.org>>
Date: Thursday, April 18, 2013 8:24 PM
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>"
mailto:user@cassandra.apache.org>>
Subject: Re: Key-Token mapping in cassandra
Hi Ravi
Key1 -->
Hi Ravi
Key1 --> 123/IMAGE
Key2 --> 123/DOCUMENTS
Key3 --> 123/MULTIMEDIA
Which one is your ROW KEY ?? It is Key1,Key2,Key3?
On Thu, Apr 18, 2013 at 3:56 PM, aaron morton wrote:
> All rows with the same key go on the same nodes. So if you use the same
> row key in different CF's they will
All rows with the same key go on the same nodes. So if you use the same row key
in different CF's they will be on the same nodes. i.e. have CF's called Image,
Documents, Meta and store rows in all of them with the 123 key.
Cheers
-
Aaron Morton
Freelance Cassandra Consultant
Ne
Thanks Aaron.
We are looking at co-locating all keys for a given user in one Cassandra
node.
Are there any other ways to achieve this
--
Ravi
On Thursday, April 18, 2013, aaron morton wrote:
> CASSANDRA-1034
>
> That ticket is about removing an assumption which was not correct.
>
> I would like
> CASSANDRA-1034
That ticket is about removing an assumption which was not correct.
> I would like all keys with "123" as prefix to be mapped to a single token.
Why?
it's not possible nor desirable IMHO. Tokens are used to identify a single row
internally.
Cheers
-
Aaron Mor
We would like to map multiple keys to a single token in cassandra. I
believe this should be possible now with CASSANDRA-1034
Ex:
Key1 --> 123/IMAGE
Key2 --> 123/DOCUMENTS
Key3 --> 123/MULTIMEDIA
I would like all keys with "123" as prefix to be mapped to a single token.
Is this possible? What sh
