Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/5108#discussion_r154283216
--- Diff:
flink-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/connectors/kafka/partitioner/FlinkFixedPartitioner.java
---
@@ -68,6 +78,13 @@ public int partition(T record, byte[] key, byte[] value,
String targetTopic, int
partitions != null && partitions.length > 0,
"Partitions of the target topic is empty.");
- return partitions[parallelInstanceId % partitions.length];
+ if (topicToFixedPartition.containsKey(targetTopic)) {
--- End diff --
This will only work if we don't restart the job, right? Because the state
of the partitioner is lost when we have a failure.
---
