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https://issues.apache.org/jira/browse/AVRO-121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Doug Cutting updated AVRO-121:
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Attachment: AVRO-121.patch
Adds a setExpected(Schema) method. Also, when the single-schema constructor is
used, the expected schema now defaults to that passed in. This means that,
when a so-constructed datum reader is passed to a container (e.g., a
DataFileReader), and setSchema(Schema) is called with the schema used to write
the container, the schema used in the constructor will be used as the
"expected" schema, as intended.
> expected schema should be specifiable by specific & reflect datum readers
> -------------------------------------------------------------------------
>
> Key: AVRO-121
> URL: https://issues.apache.org/jira/browse/AVRO-121
> Project: Avro
> Issue Type: Improvement
> Components: java
> Reporter: Doug Cutting
> Assignee: Doug Cutting
> Priority: Critical
> Fix For: 1.2.0
>
> Attachments: AVRO-121.patch
>
>
> The generic datum reader supports the specification of an 'expected' schema,
> that may differ from that used to write the data. The specific and reflect
> datum readers are based on the generic, but do not permit the specification
> of this and hence cannot support reading alternate versions of data.
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