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https://issues.apache.org/jira/browse/AVRO-1353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13731257#comment-13731257
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Marshall Bockrath-Vandegrift commented on AVRO-1353:
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Reworking, but running into a few issues:
> SpecificData has a getClassLoader() method that's currently used for this.
> Generalizing it to a base class sounds like the thing to do. So this is
> another method that should migrate to the new abstract base class or to
> GenericData in the meantime.
I'm finding that I also need to add a setClassLoader() method, because the
standard reflection utilities can only invoke a no-argument constructor. That
means the classLoader member becomes non-final, which impacts thread-safety...
How bad is it to tread deeper into the reflection mire, so as to invoke the
GenericData (subclass) constructor with a ClassLoader argument? Alternatively,
what about including an avro-mapred DataModelFactory interface, instances of
which can be Configurable? Then serialization creates an instance of the
factory, which returns instances of the GenericData subclass.
> Configurable Hadoop serialization in-memory representations
> -----------------------------------------------------------
>
> Key: AVRO-1353
> URL: https://issues.apache.org/jira/browse/AVRO-1353
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.7.5
> Reporter: Marshall Bockrath-Vandegrift
> Attachments: avro-1353-2.patch, avro-1353.patch
>
>
> As discussed on the Avro Users mailing list [1], it would be useful to allow
> configuration of the DatumReader/Writer implementations used by Hadoop Avro
> serialization, especially for non-Java JVM languages.
> [1]
> http://mail-archives.apache.org/mod_mbox/avro-user/201305.mbox/%3C87ehdh14qn.fsf%40zeno.atl.damballa%3E
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