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From "George Baxter (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AVRO-1478) protobuf namespaces causing problem for avro c++ reader
Date Wed, 12 Mar 2014 16:51:42 GMT

    [ https://issues.apache.org/jira/browse/AVRO-1478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13931977#comment-13931977

George Baxter commented on AVRO-1478:

The ProtobufData support takes the protocol buffer 'outer' class.  I'm not sure what the java
code uses the namespace for, but either the $ could be assumed or something like URL-encoded
if it's a required piece of information used during deserialization or what-not.  If it's
simply to avoid naming collisions, then your suggest would probably be sufficient.

> protobuf namespaces causing problem for avro c++ reader
> -------------------------------------------------------
>                 Key: AVRO-1478
>                 URL: https://issues.apache.org/jira/browse/AVRO-1478
>             Project: Avro
>          Issue Type: Bug
>            Reporter: George Baxter
> Utilizing the ProtobufData functionality to generate avro output, we run into a complication
when consuming this output using the c++ based avro reader.  Seems it doesn't much like the
'$' of a nesting outer class that is inherent with protocol buffers in java.
> Exception opening file for read:Invalid namespace: com.xxx.base.message.MessageProtos$
> in 
> avro::DataFileReader<avro::GenericDatum>* file_reader;
> file_reader = new avro::DataFileReader<avro::GenericDatum>(file_name.c_str());]

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