Mailing-List: contact commits-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@cassandra.apache.org
Date: Sun, 21 Oct 2012 14:18:11 +0000 (UTC)
From: "Edward Capriolo (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <1223519414.7299.1350829091877.JavaMail.jiratomcat@arcas>
In-Reply-To: <651373149.7298.1350828972121.JavaMail.jiratomcat@arcas>
Subject: [jira] [Commented] (CASSANDRA-4843) When upgrading from 1.1.6 to
 1.20 change in partitioner causes nodes not to start
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/CASSANDRA-4843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13480973#comment-13480973 ] 

Edward Capriolo commented on CASSANDRA-4843:
--------------------------------------------

The error message is strange as well.

Changing paritioner on a existing cluster can cause data loose, Please verify your partitioner in cassandra.yaml

"Can cause data *loss" is impossible because Cassandra will not even start. If it did start it would definitely cause data loss.
                
> When upgrading from 1.1.6 to 1.20 change in partitioner causes nodes not to start
> ---------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-4843
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4843
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Edward Capriolo
>
> ERROR 10:17:20,341 Cannot open /home/edward/cassandra/data/system/schema_keyspaces/system-schema_keyspaces-hf-1 because partitioner does not match org.apache.cassandra.dht.RandomPartitioner != org.apache.cassandra.dht.Murmur3Partitioner
> This is because 1.2 has a new default partitioner, why are we changing the default? Is this wise? The current partitioner has been rock solid for years. 
> Should the previously known partition be stored in the schema like the previously know seed nodes, and schema?

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira