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From Jeremiah Jordan <jeremiah.jor...@morningstar.com>
Subject Re: Schema change causes exception when adding data
Date Tue, 06 Mar 2012 17:55:28 GMT
That is the best one I have found.

On 03/01/2012 03:12 PM, Tharindu Mathew wrote:
> There are 2. I'd like to wait till there are one, when I insert the value.
>
> Going through the code, calling client.describe_schema_versions() 
> seems to give a good answer to this. And I discovered that if I wait 
> till there is only 1 version, I will not get this error.
>
> Is this the best practice if I want to check this programatically?
>
> On Thu, Mar 1, 2012 at 11:15 PM, aaron morton <aaron@thelastpickle.com 
> <mailto:aaron@thelastpickle.com>> wrote:
>
>     use describe cluster in the CLI to see how many schema versions
>     there are.
>
>     Cheers
>
>     -----------------
>     Aaron Morton
>     Freelance Developer
>     @aaronmorton
>     http://www.thelastpickle.com
>
>     On 2/03/2012, at 12:25 AM, Tharindu Mathew wrote:
>
>>
>>
>>     On Thu, Mar 1, 2012 at 11:47 AM, Tharindu Mathew
>>     <mccloud35@gmail.com <mailto:mccloud35@gmail.com>> wrote:
>>
>>         Jeremiah,
>>
>>         Thanks for the reply.
>>
>>         This is what we have been doing, but it's not reliable as we
>>         don't know a definite time that the schema would get
>>         replicated. Is there any way I can know for sure that changes
>>         have propagated?
>>
>>     [Edit: corrected to a question]
>>
>>
>>         Then I can block the insertion of data until then.
>>
>>
>>         On Thu, Mar 1, 2012 at 4:33 AM, Jeremiah Jordan
>>         <JEREMIAH.JORDAN@morningstar.com
>>         <mailto:JEREMIAH.JORDAN@morningstar.com>> wrote:
>>
>>             The error is that the specified colum family doesn’t
>>             exist.  If you connect with the CLI and describe the
>>             keyspace does it show up?  Also, after adding a new
>>             column family programmatically you can’t use it
>>             immediately, you have to wait for it to propagate.  You
>>             can use calls to describe schema to do so, keep calling
>>             it until every node is on the same schema.
>>
>>             -Jeremiah
>>
>>             *From:*Tharindu Mathew [mailto:mccloud35@gmail.com
>>             <mailto:mccloud35@gmail.com>]
>>             *Sent:* Wednesday, February 29, 2012 8:27 AM
>>             *To:* user
>>             *Subject:* Schema change causes exception when adding data
>>
>>             Hi,
>>
>>             I have a 3 node cluster and I'm dynamically updating a
>>             keyspace with a new column family. Then, when I try to
>>             write records to it I get the following exception shown
>>             at [1].
>>
>>             How do I avoid this. I'm using Hector and the default
>>             consistency level of QUORUM is used. Cassandra version
>>             0.7.8. Replication Factor is 1.
>>
>>             How can I solve my problem?
>>
>>             [1] -
>>             me.prettyprint.hector.api.exceptions.HInvalidRequestException:
>>             InvalidRequestException(why:unconfigured columnfamily
>>             proxySummary)
>>
>>             at
>>             me.prettyprint.cassandra.service.ExceptionsTranslatorImpl.translate(ExceptionsTranslatorImpl.java:42)
>>
>>             at
>>             me.prettyprint.cassandra.service.KeyspaceServiceImpl$10.execute(KeyspaceServiceImpl.java:397)
>>
>>             at
>>             me.prettyprint.cassandra.service.KeyspaceServiceImpl$10.execute(KeyspaceServiceImpl.java:383)
>>
>>             at
>>             me.prettyprint.cassandra.service.Operation.executeAndSetResult(Operation.java:101)
>>
>>             at
>>             me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:156)
>>
>>             at
>>             me.prettyprint.cassandra.service.KeyspaceServiceImpl.operateWithFailover(KeyspaceServiceImpl.java:129)
>>
>>             at
>>             me.prettyprint.cassandra.service.KeyspaceServiceImpl.multigetSlice(KeyspaceServiceImpl.java:401)
>>
>>             at
>>             me.prettyprint.cassandra.model.thrift.ThriftMultigetSliceQuery$1.doInKeyspace(ThriftMultigetSliceQuery.java:67)
>>
>>             at
>>             me.prettyprint.cassandra.model.thrift.ThriftMultigetSliceQuery$1.doInKeyspace(ThriftMultigetSliceQuery.java:59)
>>
>>             at
>>             me.prettyprint.cassandra.model.KeyspaceOperationCallback.doInKeyspaceAndMeasure(KeyspaceOperationCallback.java:20)
>>
>>             at
>>             me.prettyprint.cassandra.model.ExecutingKeyspace.doExecute(ExecutingKeyspace.java:72)
>>
>>             at
>>             me.prettyprint.cassandra.model.thrift.ThriftMultigetSliceQuery.execute(ThriftMultigetSliceQuery.java:58)
>>
>>
>>
>>             -- 
>>             Regards,
>>
>>             Tharindu
>>
>>             blog: http://mackiemathew.com/
>>
>>
>>
>>
>>         -- 
>>         Regards,
>>
>>         Tharindu
>>
>>         blog: http://mackiemathew.com/
>>
>>
>>
>>
>>     -- 
>>     Regards,
>>
>>     Tharindu
>>
>>     blog: http://mackiemathew.com/
>>
>
>
>
>
> -- 
> Regards,
>
> Tharindu
>
> blog: http://mackiemathew.com/
>

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