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From "kulkarni.swarnim@gmail.com" <kulkarni.swar...@gmail.com>
Subject Re: GenericRecord and passivity
Date Tue, 15 Oct 2013 23:01:10 GMT
Old Schema: http://pastebin.com/x5CtmKWK
New Schema: http://pastebin.com/c8ZSKMaG
Code to deserialize: http://pastebin.com/RbBWm1VN


On Tue, Oct 15, 2013 at 5:46 PM, Doug Cutting <cutting@apache.org> wrote:

> GenericRecord should work well in this context.  Can you provide a
> complete example that fails?
>
> Doug
>
> On Tue, Oct 15, 2013 at 3:43 PM, kulkarni.swarnim@gmail.com
> <kulkarni.swarnim@gmail.com> wrote:
> > Do we know if a GenericRecord is robust to schema evolution? I am
> currently
> > seeing cases where I get an exception like the following if I try to
> > deserialize an older record with a newer schema.
> >
> > Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 8
> >
> > at
> org.apache.avro.io.parsing.Symbol$Alternative.getSymbol(Symbol.java:364)
> >
> > at
> org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:229)
> >
> > at org.apache.avro.io.parsing.Parser.advance(Parser.java:88)
> >
> > at
> org.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:206)
> >
> > at
> >
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:152)
> >
> > at
> >
> org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:177)
> >
> > at
> >
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:148)
> >
> > at
> >
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:139)
> >
> >
> > The newer schema just has a few more fields added to it and no names from
> > the older schema were changed.
> >
> > Is this a known issue? Should a SpecificRecord be always considered when
> > passivity is important?
> >
> >
> > Thanks,
> >
> >
> > --
> > Swarnim
>



-- 
Swarnim

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