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https://issues.apache.org/jira/browse/FLINK-30548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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heyu dou updated FLINK-30548:
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Component/s: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
> In some cases AvroDeserializationSchema buffer is not reset
> -----------------------------------------------------------
>
> Key: FLINK-30548
> URL: https://issues.apache.org/jira/browse/FLINK-30548
> Project: Flink
> Issue Type: Bug
> Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
> Reporter: heyu dou
> Priority: Major
>
> When the avro schema changes, if the downstream uses the old schema to read
> the data generated by the new schema
> The buffer pos of AvroDeserializationSchema.decoder will not be reset
> This will result in misaligned reads
> Because AvroDeserializationSchema.decoder is reuse and not reset pos
> [https://github.com/apache/flink/blob/99c2a415e9eeefafacf70762b6f54070f7911ceb/flink-formats/flink-avro/src/main/java/org/apache/flink/formats/avro/AvroDeserializationSchema.java#L165]
>
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