Responded as part of the following discussion
https://lists.apache.org/x/thread.html/re85a1fb3f17b5ef1af2844fc1a07b6d2f5e6237bf4c33059e13890ee@%3Cuser.flink.apache.org%3E.
Let's continue the discussion there.

Cheers,
Till

On Sun, May 30, 2021 at 2:32 PM 周瑞 <rui.z...@woqutech.com> wrote:

>
> 程序用于测试 flink kafka exactly once, 普通提交可以正常运行, 但如果从 savepoint 中恢复就会报下面的错误
> kafka server 端, 配置了  transaction.timeout.ms = 900000
>
> public static final String KAFKA_TABLE_FORMAT =
>         "CREATE TABLE "+TABLE_NAME+" (\n" +
>                 "  "+COLUMN_NAME+" STRING\n" +
>                 ") WITH (\n" +
>                 "   'connector' = 'kafka',\n" +
>                 "   'topic' = '%s',\n" +
>                 "   'properties.bootstrap.servers' = '%s',\n" +
>                 "   'sink.semantic' = 'exactly-once',\n" +
>                 "   'properties.transaction.timeout.ms' = '900000',\n" +
>                 "   'sink.partitioner' = 
> 'com.woqutench.qmatrix.cdc.extractor.PkPartitioner',\n" +
>                 "   'properties.max.in.flight.requests.per.connection' = 
> '1',\n" +
>                 "   'properties.enable.idempotence' = 'true',\n" +
>                 "   'properties.transactional.id' = '%s',\n" +
>                 "   'format' = 'dbz-json'\n" +
>                 ")\n";
>
>
> 2021-05-30 19:38:57,513 WARN org.apache.flink.runtime.taskmanager.Task []
> - Source: TableSourceScan(table=[[default_catalog, default_database,
> debezium_source]], fields=[data]) -> Sink: Sink
> (table=[default_catalog.default_database.KafkaTable2], fields=[data]) (1/1
> )#144518 (4739d37a5f82268901f8fb51b39735e9) switched from INITIALIZING to
> FAILED with failure cause: org.apache.kafka.common.KafkaException:
> Unexpected error in InitProducerIdResponse; Producer attempted an
> operation with an old epoch. Either there is a newer producer with the
> same transactionalId, or the producer's transaction has been expired by
> the broker.
>     at org.apache.kafka.clients.producer.internals.
> TransactionManager$InitProducerIdHandler.handleResponse(TransactionManager
> .java:1352)
>     at org.apache.kafka.clients.producer.internals.
> TransactionManager$TxnRequestHandler.onComplete(TransactionManager.java:
> 1260)
>     at org.apache.kafka.clients.ClientResponse.onComplete(ClientResponse
> .java:109)
>     at org.apache.kafka.clients.NetworkClient.completeResponses(
> NetworkClient.java:572)
>     at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:564)
>     at org.apache.kafka.clients.producer.internals.Sender
> .maybeSendAndPollTransactionalRequest(Sender.java:414)
>     at org.apache.kafka.clients.producer.internals.Sender.runOnce(Sender
> .java:312)
>     at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:
> 239)
>     at java.lang.Thread.run(Thread.java:748)
>
> 查阅了 google 上的相关资料, 但是仍然无法解决, 有人遇到过类似的问题? 或者能提供排查思路么?
>

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