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https://issues.apache.org/jira/browse/CASSANDRA-1186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stu Hood updated CASSANDRA-1186:
--------------------------------
Attachment: 0004-Add-utility-functions-for-dealing-with-Avro-serializ.patch
0005-Sync-up-Avro-schema-with-Thrift-and-add-CfDef.id.patch
0006-Replace-serialization-code-in-KS-CF-CMetaData-and-po.patch
Rebased for trunk, and applied the following changes:
* Removed the 'private' Avro schema that was in pre-0002: left behind the
build.xml generalization
** Instead, serialization of config.KS/CF/CMetaData uses avro.Ks/Cf/ColumnDef
* Switched back to a 'column per keyspace' datamodel in the "Schema" cf, with a
magic column name to store the Avro schema
* Squashed pre-0005 and pre-0006 to 0006
* Removed pre-0007
Ready for another look. Thanks for your patience!
> futureproof [KS|CF]MetaData
> ---------------------------
>
> Key: CASSANDRA-1186
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1186
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.7
> Reporter: Jonathan Ellis
> Assignee: Stu Hood
> Priority: Critical
> Fix For: 0.7
>
> Attachments:
> 0001-Move-Yaml-related-classes-aside-to-reuse-names.patch,
> 0002-Extract-Avro-generation-for-future-reuse.patch,
> 0003-Split-OutputBuffer-out-for-reuse.patch,
> 0004-Add-utility-functions-for-dealing-with-Avro-serializ.patch,
> 0005-Sync-up-Avro-schema-with-Thrift-and-add-CfDef.id.patch,
> 0006-Replace-serialization-code-in-KS-CF-CMetaData-and-po.patch
>
>
> KSMetaData/CFMetaData serialization is fragile. We need to be able to add
> fields easily without breaking when we read old-style serialized bytes.
> Avro and Thrift are designed to handle this. We should probably use one of
> those rather than re-inventing the wheel. If Avro is mature enough for this
> then let's use that, otherwise let's use Thrift.
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