Arvid Heise

We should additionally provide a version with guava shaded.

Automation of #15

[FLINK-35109] Bump to Flink 1.19 and support Flink 1.20

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Also - adds the migration support tests up to 1.20. - bumps Kafka-client to 3.6.2 - various test cases that become flaky with the bumps

[FLINK-36455] Sinks retry synchronously

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## What is the purpose of the change Sinks so far retried asynchronously to increase commit throughput in case of temporary issues. However, the contract of notifyCheckpointCompleted states that checkpoints...

[FLINK-36379] Improve (Global)Committer with UC disabled

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## What is the purpose of the change [FLINK-36287](https://issues.apache.org/jira/browse/FLINK-36287) disabled UC for all inter-sink connections to adhere to the contract of notifyCheckpointCompleted. This allows us to remove some special casing...

FLINK-38453 broke the threading model of KafkaEnumerator by accessing some of the data structures from the worker thread without synchronization. The migration path also triggers NPE. This commit partially reverts...

[FLINK-36659][docs] Update Kafka connector docs for 4.0.0

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Update Kafka connector docs for 4.0.0