[jira] [Created] (FLINK-19156) Migration of transactionIdHint in Kafka is never applied

[Shang Yuanchun (Jira)]

Dawid Wysakowicz created FLINK-19156:
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             Summary: Migration of transactionIdHint in Kafka is never applied
                 Key: FLINK-19156
                 URL: https://issues.apache.org/jira/browse/FLINK-19156
             Project: Flink
          Issue Type: Bug
          Components: Connectors / Kafka
    Affects Versions: 1.9.0
            Reporter: Dawid Wysakowicz


The code that checks if we should migrate the transaction id is as follows:

{code}
        @Deprecated
        private static final ListStateDescriptor<FlinkKafkaProducer.NextTransactionalIdHint> NEXT_TRANSACTIONAL_ID_HINT_DESCRIPTOR =
                new ListStateDescriptor<>("next-transactional-id-hint", TypeInformation.of(NextTransactionalIdHint.class));

                if (context.getOperatorStateStore().getRegisteredStateNames().contains(NEXT_TRANSACTIONAL_ID_HINT_DESCRIPTOR)) {
                        migrateNextTransactionalIdHindState(context);
                }
{code}

The condition in if statement is never met because it checks if a {{Set<String>}} contains object of type {{ListStateDescriptor}}



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