[GitHub] [pulsar] shiv4289 commented on issue #6419: auto_consume for avro crashes in decode (updated producer .class, old consumer schema .class)

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shiv4289 commented on issue #6419: auto_consume for avro crashes in decode (updated producer .class, old consumer schema .class)
URL: https://github.com/apache/pulsar/issues/6419#issuecomment-593298037
 
 
   Fixed with this in the consumer code:
   
   ```
               String avroGeneratedClassName = genericAvroRecord.getAvroRecord().getSchema().getFullName();
               Class<?> avroGeneratedClass = Class.forName(avroGeneratedClassName);
   
               org.apache.pulsar.shade.org.apache.avro.Schema writerSchema = new Parser().parse(new String(schemaProvider.getSchemaByVersion(msg.getSchemaVersion()).get().getSchema()));
   
               org.apache.avro.Schema avroNativeReaderSchema = (org.apache.avro.Schema) avroGeneratedClass.getDeclaredField("SCHEMA$").get(null);
               org.apache.pulsar.shade.org.apache.avro.Schema readerSchema = new Parser().parse(avroNativeReaderSchema.toString());
   
               AvroReader avroReader = new AvroReader(writerSchema, readerSchema);
               return avroReader.read(msg.getData());
   ```

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