incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Frank LoVecchio <fr...@isidorey.com>
Subject Re: Schema Questions?
Date Tue, 28 Sep 2010 21:15:07 GMT
Ok,

I tried that method in Pelops, and this is the error I get when trying to to
update a Column Family Type from Standard to Super:

 InvalidRequestException(why:types do not match.)
       at
org.apache.cassandra.thrift.Cassandra$system_update_column_family_result.read(Cassandra.java:27741)
       at
org.apache.cassandra.thrift.Cassandra$Client.recv_system_update_column_family(Cassandra.java:1579)
       at
org.apache.cassandra.thrift.Cassandra$Client.system_update_column_family(Cassandra.java:1554)

I have last night's build of Cassandra.

On Tue, Sep 28, 2010 at 2:55 PM, Aaron Morton <aaron@thelastpickle.com>wrote:

> There is a system_update_column_family(CDef) function on the trunk, so it
> will be in 0.7-beta2. Take a look at the interface/cassandra.thrift .
>
>
> A
>
> On 29 Sep, 2010,at 09:31 AM, Frank LoVecchio <frank@isidorey.com> wrote:
>
> I understand adding column family configuration fields using thrift in
> Pelops for system_add_column_family, and even renaming column families, but
> what about modifying the actual column family configuration values,
> e.g. read_repair_chance: 1.0 to read_repair_chance: .5 (as a poor example)?
>
>
>
> On Tue, Sep 28, 2010 at 1:17 PM, Peter Schuller <
> peter.schuller@infidyne.com> wrote:
>
>> > Question regarding schema set-up and modification:  I just set up the
>> newest
>> > nightly build of 0.7, imported our .yaml file after starting Cassandra,
>> and
>> > everything is honky-dorey.  We're not sure if Pelops is capable of
>> modifying
>> > shema definitions, but it doesn't appear any changes we make to the
>> .yaml
>> > file after the initial import go through (re-importing using schematool
>> > doesn't work).
>>
>> Expected in 0.7 where the configuration file is essentially just an
>> example:
>>
>>   http://wiki.apache.org/cassandra/FAQ#no_keyspaces
>>   http://wiki.apache.org/cassandra/LiveSchemaUpdates
>>
>> > How could I change, for example, the rows_cached or name
>> > fields below on the fly without losing data?  Is this possible?
>>
>> Check out the system_* methods at the bottom of
>> interface/cassandra.thrift. I believe these are in working order for
>> 0.7
>>
>> --
>> / Peter Schuller
>>
>
>

Mime
View raw message