[jira] [Assigned] (AVRO-3597) Recent changes in GenericDatumReader.java break compatibility

["Christophe Le Saec (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AVRO-3597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christophe Le Saec reassigned AVRO-3597:
----------------------------------------

    Assignee: Christophe Le Saec

> Recent changes in GenericDatumReader.java break compatibility
> -------------------------------------------------------------
>
>                 Key: AVRO-3597
>                 URL: https://issues.apache.org/jira/browse/AVRO-3597
>             Project: Apache Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.11.1
>            Reporter: Viktor Dvoretskii
>            Assignee: Christophe Le Saec
>            Priority: Major
>
> We use a custom SpecificDatumReader which overrides the string creation logic. It looks like this:
> {code:java}
> class CustomSpecificDatumReader<T> extends SpecificDatumReader<T> {
>     @Override
>     protected Object newInstanceFromString(Class c, String s) {
>         // custom logic
>     }
> } {code}
> With [this commit|https://github.com/apache/avro/commit/820ed6e5ea4417b5735078bfd26c99f1305ea363], the newInstanceFromString() method is no longer called. Instead, strings are created with the hard-coded logic within GenericDatumReader.ReaderCache.
> It would be appreciated if you made it possible to override the string creation logic used by GenericDatumReader.ReaderCache. Preferably make use of the newInstanceFromString() method again to maintain backward compatibility.



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