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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AVRO-1331) Java reader backwards-compatibility breakage
Date Wed, 15 May 2013 21:09:16 GMT

     [ https://issues.apache.org/jira/browse/AVRO-1331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doug Cutting updated AVRO-1331:
-------------------------------

        Fix Version/s: 1.7.5
             Assignee: Doug Cutting
    Affects Version/s:     (was: 1.7.5)
               Status: Patch Available  (was: Open)
    
> Java reader backwards-compatibility breakage
> --------------------------------------------
>
>                 Key: AVRO-1331
>                 URL: https://issues.apache.org/jira/browse/AVRO-1331
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>            Reporter: Jeremy Kahn
>            Assignee: Doug Cutting
>             Fix For: 1.7.5
>
>         Attachments: AVRO-1331.patch, stripped-snipped.avro, stripped-snipped.schema
>
>
> For some cases where we encode Avro data with Avro 1.7.4, it is not readable with Avro
1.7.5-SNAPSHOT post AVRO-1295: the Java decoder is unable to discover the root definitions
> Among the properties of (some) schemas that trigger this failure:
> - an explicit empty string in the root namespace and
> - uses other namespaces elsewhere in the schema, 
> - has a recursive reference to the root
> A sample schema and a sample datafile with one example encoded with that schema are attached.
 
> This datafile cannot be read with Java deserializers (and I believe that the schema cannot
be parsed by the Java schema parser).

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