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https://issues.apache.org/jira/browse/FLINK-30935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn Visser updated FLINK-30935:
-----------------------------------
    Affects Version/s:     (was: 1.16.1)

> Add KafkaSerializer deserialize check when using SimpleVersionedSerializer
> --------------------------------------------------------------------------
>
>                 Key: FLINK-30935
>                 URL: https://issues.apache.org/jira/browse/FLINK-30935
>             Project: Flink
>          Issue Type: Improvement
>          Components: Connectors / Kafka
>            Reporter: Ran Tao
>            Priority: Major
>
> {code:java}
> @Override
> public int getVersion() {
>     return CURRENT_VERSION;
> }
> @Override
> public KafkaPartitionSplit deserialize(int version, byte[] serialized) throws 
> IOException {
>     try (ByteArrayInputStream bais = new ByteArrayInputStream(serialized);
>             DataInputStream in = new DataInputStream(bais)) {
>         String topic = in.readUTF();
>         int partition = in.readInt();
>         long offset = in.readLong();
>         long stoppingOffset = in.readLong();
>         return new KafkaPartitionSplit(
>                 new TopicPartition(topic, partition), offset, stoppingOffset);
>     }
> } {code}
> Current kafka many implemented serializers do not deal with version check. I 
> think we can add it like many other connectors in case of incompatible or 
> corrupt state when restoring from checkpoint..



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