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Posted to commits@cassandra.apache.org by "Stu Hood (JIRA)" <ji...@apache.org> on 2010/08/03 17:59:15 UTC
[jira] Created: (CASSANDRA-1351) Avro Schema Swap
Avro Schema Swap
----------------
Key: CASSANDRA-1351
URL: https://issues.apache.org/jira/browse/CASSANDRA-1351
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Stu Hood
Assignee: Stu Hood
Priority: Critical
Fix For: 0.7.0
Attachments: 0001-Specify-the-readers-schema-as-different-from-the-wri.patch
Due to misreading Avro's docs, I swapped the Schema parameters to Avro's schema resolver.
The schema resolver allows for backwards compatibility by accepting a writer's (ser.) and reader's (deser.) schema, and resolving them to determine which fields to add or ignore. The reader's schema was not being set correctly, which was breaking backwards compatibility (although not the disk format).
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[jira] Commented: (CASSANDRA-1351) Avro Schema Swap
Posted by "Hudson (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12895252#action_12895252 ]
Hudson commented on CASSANDRA-1351:
-----------------------------------
Integrated in Cassandra #509 (See [http://hudson.zones.apache.org/hudson/job/Cassandra/509/])
specify schema used to read serialized migrations. patch by stuhood, reviewed by gdusbabek. CASSANDRA-1351
> Avro Schema Swap
> ----------------
>
> Key: CASSANDRA-1351
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1351
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Stu Hood
> Assignee: Stu Hood
> Priority: Critical
> Fix For: 0.7 beta 1
>
> Attachments: 0001-Specify-the-readers-schema-as-different-from-the-wri.patch
>
>
> Due to misreading Avro's docs, I swapped the Schema parameters to Avro's schema resolver.
> The schema resolver allows for backwards compatibility by accepting a writer's (ser.) and reader's (deser.) schema, and resolving them to determine which fields to add or ignore. The reader's schema was not being set correctly, which was breaking backwards compatibility (although not the disk format).
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[jira] Updated: (CASSANDRA-1351) Avro Schema Swap
Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis updated CASSANDRA-1351:
--------------------------------------
Fix Version/s: 0.7 beta 1
(was: 0.7.0)
> Avro Schema Swap
> ----------------
>
> Key: CASSANDRA-1351
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1351
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Stu Hood
> Assignee: Stu Hood
> Priority: Critical
> Fix For: 0.7 beta 1
>
> Attachments: 0001-Specify-the-readers-schema-as-different-from-the-wri.patch
>
>
> Due to misreading Avro's docs, I swapped the Schema parameters to Avro's schema resolver.
> The schema resolver allows for backwards compatibility by accepting a writer's (ser.) and reader's (deser.) schema, and resolving them to determine which fields to add or ignore. The reader's schema was not being set correctly, which was breaking backwards compatibility (although not the disk format).
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[jira] Commented: (CASSANDRA-1351) Avro Schema Swap
Posted by "Stu Hood (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894915#action_12894915 ]
Stu Hood commented on CASSANDRA-1351:
-------------------------------------
Also, I opened AVRO-603 to handle clarifying these docs.
> Avro Schema Swap
> ----------------
>
> Key: CASSANDRA-1351
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1351
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Stu Hood
> Assignee: Stu Hood
> Priority: Critical
> Fix For: 0.7.0
>
> Attachments: 0001-Specify-the-readers-schema-as-different-from-the-wri.patch
>
>
> Due to misreading Avro's docs, I swapped the Schema parameters to Avro's schema resolver.
> The schema resolver allows for backwards compatibility by accepting a writer's (ser.) and reader's (deser.) schema, and resolving them to determine which fields to add or ignore. The reader's schema was not being set correctly, which was breaking backwards compatibility (although not the disk format).
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[jira] Updated: (CASSANDRA-1351) Avro Schema Swap
Posted by "Stu Hood (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stu Hood updated CASSANDRA-1351:
--------------------------------
Attachment: 0001-Specify-the-readers-schema-as-different-from-the-wri.patch
> Avro Schema Swap
> ----------------
>
> Key: CASSANDRA-1351
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1351
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Stu Hood
> Assignee: Stu Hood
> Priority: Critical
> Fix For: 0.7.0
>
> Attachments: 0001-Specify-the-readers-schema-as-different-from-the-wri.patch
>
>
> Due to misreading Avro's docs, I swapped the Schema parameters to Avro's schema resolver.
> The schema resolver allows for backwards compatibility by accepting a writer's (ser.) and reader's (deser.) schema, and resolving them to determine which fields to add or ignore. The reader's schema was not being set correctly, which was breaking backwards compatibility (although not the disk format).
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