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https://issues.apache.org/jira/browse/AVRO-803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13122154#comment-13122154
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Doug Cutting commented on AVRO-803:
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Here's a new proposal:
- add a new Decoder method, 'String readString()' implemented to avoid
allocating new intermediate byte arrays for each call as is currently done when
Utf8's are not reused.
- change generated specific code to optionally use String everywhere instead
of CharSequence. (We could also add an option to emit Utf8 everywhere.) When
String is used we add a property to the string schemas in the generated code so
they become {"type":"string", "java":"String"}.
- GenericData#readString() would call the new Decoder method when
"java":"String" is present in the String's schema.
This is totally back-compatible.
> Java generated Avro classes make using Avro painful and surprising
> ------------------------------------------------------------------
>
> Key: AVRO-803
> URL: https://issues.apache.org/jira/browse/AVRO-803
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.5.0
> Environment: Any
> Reporter: Sam Pullara
> Fix For: 1.6.0
>
> Attachments: Foo.java
>
>
> Currently the Avro generated Java classes expose CharSequence in their API.
> However, you cannot use any old CharSequence when interacting with them. In
> fact, you have to use the Utf8 class if you want to get consistent results. I
> think that Avro should work with any CharSequence if that is the API. Here is
> an example where this happens:
> https://github.com/spullara/avro-generated-code/blob/master/src/test/java/AnnoyingTest.java
> That prints out 'false' three times unexpectedly. If you can't get it to
> print 'true' three times then you should probably change it back to Utf8.
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