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From "T Jake Luciani (JIRA)" <>
Subject [jira] Updated: (CASSANDRA-1938) Use UUID as node identifiers in counters instead of IP addresses
Date Wed, 09 Mar 2011 03:49:59 GMT


T Jake Luciani updated CASSANDRA-1938:

    Attachment: 1938-rebase-and-fix-v1.txt

Rebased with trunk...

During my testing I discovered a NPE when converting from thrift -> avro migration that's
fixed.  I need to do more testing but looks good so far. 

> Use UUID as node identifiers in counters instead of IP addresses 
> -----------------------------------------------------------------
>                 Key: CASSANDRA-1938
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 0.8
>         Attachments: 0001-Use-uuid-instead-of-IP-for-counters.patch, 0002-Merge-old-shard-locally.patch,
0003-Thrift-change-to-CfDef.patch, 1938-rebase-and-fix-v1.txt, 1938_discussion
>   Original Estimate: 56h
>  Remaining Estimate: 56h
> The use of IP addresses as node identifiers in the partition of a given
> counter is fragile. Changes of the node's IP addresses can result in data
> loss. This patch proposes to use UUIDs instead.
> NOTE: this breaks the on-disk file format (for counters)

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