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Posted to dev@gora.apache.org by "Renato Javier Marroquín Mogrovejo (JIRA)" <ji...@apache.org> on 2013/05/01 07:22:16 UTC
[jira] [Commented] (GORA-212) Verify storage and retrieval of Avro
null-multi-type Union data type within Gora-Cassandra
[ https://issues.apache.org/jira/browse/GORA-212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13646389#comment-13646389 ]
Renato Javier Marroquín Mogrovejo commented on GORA-212:
--------------------------------------------------------
Hi Lewis, thanks for getting those changes into a cleaner patch!
What there is to discuss is that how we want to store the schema used while inserting the new object. Because if we were talking about a single-type union, we would only have one type (i.e. null + a single type) so it is easy to know which schema we are using.
However, when using multi-type union data types we should keep some record of the schema used in order to chose the correct serializer whenever we decide to obtain the data back out. In other words, we'd need to add a new column for storing the index of the selected type within the union data type. I am not sure if we/users want to store an extra column for the ability to use multi-types unions. What do you think man?
> Verify storage and retrieval of Avro null-multi-type Union data type within Gora-Cassandra
> ------------------------------------------------------------------------------------------
>
> Key: GORA-212
> URL: https://issues.apache.org/jira/browse/GORA-212
> Project: Apache Gora
> Issue Type: Improvement
> Components: gora-cassandra
> Affects Versions: 0.3
> Reporter: Renato Javier Marroquín Mogrovejo
> Assignee: Renato Javier Marroquín Mogrovejo
> Priority: Minor
> Labels: gora-cassandra, gora-core
> Fix For: 0.3
>
> Attachments: GORA-212.v1.patch, GORA-212.v2.patch
>
>
> Verify storage and retrieval of Avro null-multi-type Union data type within Gora-Cassandra
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